Pemuaian Zat Cair

<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHMJTACTAwZcIrY0xYZsB6BewQTEAaToE0aDXthDL1xnCs0U7zEN3Ta6n1C5NT4qub46XPEik4OSKnx2cpxFN6M2ClxCEc_Va__vvZApNzH-g9XoGixOnXmyUF-eBvvdOGk6veMZYwZeM/s1600/Pemuaian+Zat+Cair.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="266" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHMJTACTAwZcIrY0xYZsB6BewQTEAaToE0aDXthDL1xnCs0U7zEN3Ta6n1C5NT4qub46XPEik4OSKnx2cpxFN6M2ClxCEc_Va__vvZApNzH-g9XoGixOnXmyUF-eBvvdOGk6veMZYwZeM/s400/Pemuaian+Zat+Cair.png" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Rangkaian Percobaan Pemuaian Zat Cair</td></tr></tbody></table><br /><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Pemuaian pada zat cair tidak melibatkan muai panjang ataupun muai luas, tetapi <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">hanya dikenal muai ruang atau muai volume saja. Semakin tinggi suhu yang diberikan pada zat cair, maka semakin besar muai volumenya.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Ketika panci diisi penuh dengan  air dipanaskan, maka panci (zat padat) dan air (zat cair) memuai. Tetapi, muai volume zat cair lebih besar daripada muai volume zat padat. Hal ini menyebabkan sebagian air  tumpah dari panci saat air mendidih. <span style="color: #231f20;"><o:p></o:p></span></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5kz-XYJEbI06KKc_ASeAtntkARe2KKYj6wZ26yOwCYGs7mOPvaqSXFWpEonpGWfKCL_s41DgCvOH_1gwiNdthJTdESSlNOaKDr-LQgc2eT0SLTJyJBt8d7wvj1VYm6ik4RP-3AYEO1x4/s1600/titik+tripel.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="310" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5kz-XYJEbI06KKc_ASeAtntkARe2KKYj6wZ26yOwCYGs7mOPvaqSXFWpEonpGWfKCL_s41DgCvOH_1gwiNdthJTdESSlNOaKDr-LQgc2eT0SLTJyJBt8d7wvj1VYm6ik4RP-3AYEO1x4/s400/titik+tripel.png" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Titik Triple</td></tr></tbody></table><br /><br /><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Pemuaian zat cair untuk masing-masing jenis zat cair berbeda-beda, akibatnya walaupun mula-mula volume zat cair sama tetapi setelah dipanaskan volumenya menjadi berbeda-beda. Pemuaian volume zat cair terkait dengan pemuaian tekanan karena peningkatan suhu. Titik pertemuan antara wujud cair, padat dan gas disebut titik tripel.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Anomali Air<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Khusus untuk air, pada kenaikan suhu dari 0º C sampai 4º C volumenya tidak bertambah, akan tetapi justru menyusut. Pengecualian ini disebut dengan anomali air. Oleh karena itu, pada suhu 4ºC air mempunyai volume terendah. Hubungan volume dengan suhu pada air dapat digambarkan pada grafik berikut.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhg663QnUZR2_ougp6O_Yh2u9wsNZIyqUR-5CzvLeI5MlO4hk1a2UEX6Iofs-Bf76v_bDoySU4OQOkUzy4sE5ui4uBMmPuWxyT8c3n5f0B7fDvwIeRlBpsfNAKubLpj_03QkeYdyTJtCLU/s1600/anomali+air.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="267" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhg663QnUZR2_ougp6O_Yh2u9wsNZIyqUR-5CzvLeI5MlO4hk1a2UEX6Iofs-Bf76v_bDoySU4OQOkUzy4sE5ui4uBMmPuWxyT8c3n5f0B7fDvwIeRlBpsfNAKubLpj_03QkeYdyTJtCLU/s400/anomali+air.png" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Anomali Air</td></tr></tbody></table><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Pada suhu 4ºC, air menempati posisi terkecil sehingga pada suhu itu air memiliki massa jenis terbesar. Jadi air bila suhunya dinaikkan dari 0ºC – 4ºC akan menyusut, dan bila suhunya dinaikkan dari 4ºC ke atas akan memuai. Hubungan antara suhu dan volume air dapat digambarkan pada Gambar diatas Biasanya pada setiap benda bila suhunya bertambah pasti mengalami pemuaian. Peristiwa yang terjadi pada air itu disebut anomali air. Hal yang sama juga terjadi pada bismuth dengan suhu yang berbeda. <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="font-family: "Times New Roman","serif"; font-size: 9.0pt;">Sumber:<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 9.0pt;">IPA TERPADU: SMP/MTs Kelas VII oleh Anny Winarsih, Agung Nugroho, Sulityoso HP, M Zajuri, Supliyadi, Slamet Suyanto. — Jakarta: Pusat Perbukuan, Departemen Pendidikan Nasional, 2008.</span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"></div><div class="MsoNormal" style="text-align: justify;"><br /></div>

Kalor dan Pemuaian Pemuaian Zat Cair

Rangkaian Percobaan Pemuaian Zat Cair Pemuaian pada zat cair tidak melibatkan muai panjang ataupun muai luas, tetapi  hanya dikenal muai rua...

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Pemuaian Zat Padat

<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGIC_t9mmtB8KMFkVr1akZgOxmVOc08wrudnM8QdQCbSEAumSmJodq2ded9XgmJoCxDf5dlVLSIgZPKzSYV1sBmsmBS4li9CA7TGvpUosuMZ2NwJ4oAGJzpYI9IhmMsPiExhbJo4KGLLQ/s1600/muai+panjang.++luas.+volume.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="160" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhGIC_t9mmtB8KMFkVr1akZgOxmVOc08wrudnM8QdQCbSEAumSmJodq2ded9XgmJoCxDf5dlVLSIgZPKzSYV1sBmsmBS4li9CA7TGvpUosuMZ2NwJ4oAGJzpYI9IhmMsPiExhbJo4KGLLQ/s640/muai+panjang.++luas.+volume.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Pemuaian pada zat padat terdiri dari  muai panjang, luas dan volume</td></tr></tbody></table><br /><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">a) Macam-macam Pemuaian pada Zat Padat</span></b><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 16.0pt;"><o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Zat padat apabila dipanaskan mengalami pemuaian panjang, luas dan volume.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">b) Muai Panjang Zat Padat<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Muai panjang dapat diamati pada benda padat yang berbentuk batang. Jika suhu semakin tinggi, pertambahan panjang akan semakin besar. Selain itu, muai panjang bergantung pada jenis zat. Koefisien muai panjang (α) suatu zat adalah besarnya pertambahan panjang setiap satuan panjang zat jika suhunya dinaikkan sebesar 1 °C. <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Persamaan Muai Panjang:</span><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><i><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 16.0pt; mso-highlight: yellow;">l_t = l₀ + ∆l </span></i><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 16.0pt; mso-highlight: yellow;">atau <i>l</i>_t = <i>l</i>₀ (1 + (α ·<i>∆T</i>)</span><span style="font-family: "Times New Roman","serif"; font-size: 16.0pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt; mso-bidi-font-style: italic;">Keterangan:<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">∆l </span></i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">= pertambahan panjang (m)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">l</span></i>_{<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">0</span>}<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"> = panjang mula-mula (m)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">l</span></i>_{<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">t</span>}<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"> = panjang benda setelah dipanaskan<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">α  = koefisien muai panjang (°C-1)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">∆T </span></i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">= kenaikan suhu (°C-1)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Contoh<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Batang suatu logam pada suhu 10^o C memiliki panjang 100 cm. Tentukan panjang logam  tersebut pada suhu 310^oC jika α = 1,2 x 10^-5/^oC.</span><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 14.0pt; mso-highlight: yellow;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: .0001pt; margin-bottom: 0cm;"><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: .0001pt; margin-bottom: 0cm;"><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;">Diketahui : </span><i style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;">l</i><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;">o = 100 cm</span></div><div class="MsoNormal" style="margin-bottom: .0001pt; margin-bottom: 0cm; margin-left: 36.0pt; margin-right: 0cm; margin-top: 0cm; text-indent: 36.0pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt; line-height: 115%;">     Δ<i>t </i>= t₂-t₁= 310^o – 10^o = 300^o C<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Ditanya : <i>l   = ?<o:p></o:p></i></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Jawab :   <i>l   </i>= <i>l</i>o (1 + <i>α Δt</i>) <o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 72pt; text-indent: 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">= 100 (1 + 1,2 x 10^-5/^oC x 300^o C)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 72pt; text-indent: 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">= </span></i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">100 + 0,36 cm<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt; text-indent: 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">          = </span></i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">100,36 cm<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">c) Muai Luas Zat Padat<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Pemuaian luas terjadi jika benda padat yang memuai berbentuk kepingan persegi (plat). Berbeda dengan pemuaian panjang yang hanya memperhitungkan muai panjang, pada pemuaian luas muai lebar juga ikut diperhitungkan. Koefisien muai luas adalah dua kali koefisien muai panjang. Secara matematis koefisien muai luas dituliskan sebagai berikut <span style="background: yellow; mso-highlight: yellow;">β = 2α</span>.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Persamaan Muai Luas<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><i><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 16.0pt; mso-highlight: yellow;">A_t = A₀ </span></i><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 16.0pt; mso-highlight: yellow;">(1 + (β · <i>∆T</i>)  atau  <i>A_t= A₀ </i>(1 + (2 α · <i>∆T</i>)</span><span style="font-family: "Times New Roman","serif"; font-size: 16.0pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt; mso-bidi-font-style: italic;">Keterangan:<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">∆</span></i><i><span style="font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic";">A </span></i><span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">= pertambahan luas (m²)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">β</span><span style="font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol;">  </span><span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">= koefisien muai luas = 2</span><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">α</span><span style="font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol;">  </span><span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">(°C^-1)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"> α</span><span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;"> = koefisien muai panjang (°C^-1)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">∆</span></i><i><span style="font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic";">T </span></i><span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">= kenaikan suhu (°C)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic";">A</span></i>_{<span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">t </span>}<span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">= luas benda setelah dipanaskan (m²)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic";">A</span></i>_{<span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">0</span>}<span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;"> = luas benda mula-mula (m²)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Contoh<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Sebuah plat aluminium yang berbentuk persegi mempunyai sisi 10 cm dan suhu 30 °C. Kemudian plat tersebut dipanaskan hingga mencapai suhu 80 °C. Jika koefisien muai panjang aluminium 0,0000255 °C-1, tentukanlah luas plat aluminium pada suhu akhir !<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Diketahui:<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">luas mula-mula (<i>A</i>₀) = (10 cm)² = 100 cm²<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">kenaikan suhu (Δ<i>T</i>) = 80 °C – 30 °C = 50 °C<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">koefisien muai luas (β) = 2.(0,0000255 °C^-1) = 0,00005 °C^-1<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Ditanyakan: </span><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Δ<i>A = ?</i><span style="color: #231f20;"><o:p></o:p></span></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Jawab:<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">A_t  = A₀ </span></i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">(1 + (β · <i>∆T</i>)  <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">     = 100 cm² {1 + (0,00005°C^-1 x 50 °C)} <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">     = (100 cm²) + 100 x {(0,00005°C^-1) × (50 °C)} <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">     = 100 cm² + 0,25 cm²<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Jadi, luas aluminium tersebut adalah 100,25 cm²<span style="color: #231f20;"><o:p></o:p></span></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">d) Muai Volume Zat Padat<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Jika zat padat yang dipanaskan berbentuk bangun ruang seperti bola, kubus, atau balok, maka bangun ruang tersebut mengalami pemuaian yang disebut muai volume. Pada muai volume, pemuaiannya dianggap ke semua arah. Untuk menentukan pemuaian volume zat padat, koefisien muainya adalah tiga kali koefisien muai panjang, atau secara matematis dituliskan sebagai berikut  <span style="background: yellow; mso-highlight: yellow;">γ = 3α</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Persamaan Muai Volume</span></b><i><span style="font-family: "PalatinoLinotype,Italic","serif"; mso-bidi-font-family: "PalatinoLinotype\,Italic";"><o:p></o:p></span></i></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><i><span style="background: yellow; font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic"; mso-highlight: yellow;">V</span></i>_{<span style="background: yellow; font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype; mso-highlight: yellow;">t </span>}<span style="background: yellow; font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype; mso-highlight: yellow;">= </span><i><span style="background: yellow; font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic"; mso-highlight: yellow;">V₀ </span></i><span style="background: yellow; font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic"; mso-bidi-font-style: italic; mso-highlight: yellow;">(</span><span style="background: yellow; font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol; mso-highlight: yellow;">1 + </span><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 14.0pt; mso-highlight: yellow;">γ. Δ<i>T</i></span><span style="background: yellow; font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol; mso-highlight: yellow;"> ) </span><span style="background: yellow; font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype; mso-highlight: yellow;">atau </span><i><span style="background: yellow; font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic"; mso-highlight: yellow;">V</span></i>_{<span style="background: yellow; font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype; mso-highlight: yellow;">t</span>}<span style="background: yellow; font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype; mso-highlight: yellow;"> = </span><i><span style="background: yellow; font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic"; mso-highlight: yellow;">V</span></i>_{<span style="background: yellow; font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype; mso-highlight: yellow;">0 </span>}<span style="background: yellow; font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol; mso-highlight: yellow;">(1 + 3</span><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 14.0pt; mso-highlight: yellow;"> α</span><span style="background: yellow; font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype; mso-highlight: yellow;"> .</span><span style="background: yellow; font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol; mso-highlight: yellow;"> </span><span style="background: yellow; font-family: "Times New Roman","serif"; font-size: 14.0pt; mso-highlight: yellow;">Δ<i>T</i></span><span style="background: yellow; font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol; mso-highlight: yellow;"> )</span><span style="font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt; mso-bidi-font-style: italic;">Keterangan:<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Δ<i>V </i>= pertambahan volume (m³)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">V</span></i>_{<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">0</span>}<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"> = volume mula-mula (m³)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><i><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">V</span></i>_{<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">t</span>}<span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"> = volume benda setelah dipanaskan (m³)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">γ = koefisien muai volume = 3α (°C^-1)<o:p></o:p></span></div><div class="MsoNormal" style="margin: 0cm 0cm 0.0001pt 36pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Δ<i>T </i>= kenaikan suhu (°C)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Contoh<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Sebuah aluminium berbentuk kubus dengan rusuk 3 cm dipanaskan dari 20 °C sampai 80 °C. jika koefisien muai aluminium 0,0000255°C^-1, tentukanlah volume pada suhu akhir !<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Diketahui:<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">volume mula-mula (<i>V</i>₀) = (3 cm)³= 27 cm³<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">kenaikan suhu (Δ<i>T</i>) = 80 °C – 20 °C = 60 °C<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">koefisien muai volume (γ) = 3 (0,0000255 °C^-1) = 0,0000765 °C^-1<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Ditanyakan Vt = ?<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Jawab:<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><i><span style="font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic";">V</span></i>_{<span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">t </span>}<span style="font-family: "PalatinoLinotype","serif"; font-size: 14.0pt; mso-bidi-font-family: PalatinoLinotype;">= </span><i><span style="font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic";">V₀ </span></i><span style="font-family: "PalatinoLinotype,Italic","serif"; font-size: 14.0pt; mso-bidi-font-family: "PalatinoLinotype\,Italic"; mso-bidi-font-style: italic;">(</span><span style="font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol;">1 + </span><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">γ. Δ<i>T</i></span><span style="font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol;"> )<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: Symbol; font-size: 14.0pt; mso-bidi-font-family: Symbol;">    </span><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">= 27 cm³ × (1 + 0,0000765°C^-1 × 60°C)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">    = 27 cm³+ {27 cm³ x (0,0000765°C^-1 × 60°C)}<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">    = 27 cm³+ 0,12393 cm³<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;">Jadi, volume aluminium pada suhu 60°C  adalah 27,12393 cm³.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal"><br /></div><div class="MsoNormal" style="margin-bottom: .0001pt; margin-bottom: 0cm;"><b><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt; line-height: 115%;">Referensi:<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"></div><div class="MsoNormal" style="margin-bottom: .0001pt; margin-bottom: 0cm;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt; line-height: 115%;">Ilmu Pengetahuan Alam 1: SMP/MTs kelas VII/ Wasis, Sugeng Yuli Irianto - Jakarta: Pusat Perbukuan, Departemen Pendidikan Nasional, 2008.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-indent: 36pt;"><span style="font-family: 'Times New Roman', serif; font-size: 14pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><br /><div class="MsoNormal"><br /></div>

Kalor dan Pemuaian Pemuaian Zat Padat

Pemuaian pada zat padat terdiri dari  muai panjang, luas dan volume a) Macam-macam Pemuaian pada Zat Padat Zat padat apabila dipanaskan meng...

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Penerapan Pemuaian Zat

<div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">A. Alat Pengukur Pemuaian<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgx1zhJwFBcyZPqVq0pbDh5nAHy0ii_M6hhmUalc97LzsdFQff0t42lSaHXdZCfwvAoyH4Cb2Eewu0jMVvC4HVS-w_F7QE687Py8Vf20tI9fZ0nV5hwi1JnA-9_-VCGAAJFYlr2ioZ5qww/s1600/Muschenbroek.png" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="56" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgx1zhJwFBcyZPqVq0pbDh5nAHy0ii_M6hhmUalc97LzsdFQff0t42lSaHXdZCfwvAoyH4Cb2Eewu0jMVvC4HVS-w_F7QE687Py8Vf20tI9fZ0nV5hwi1JnA-9_-VCGAAJFYlr2ioZ5qww/s200/Muschenbroek.png" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Muschembroek</td></tr></tbody></table><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">1. Muschenbroek</span></b><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">: </span></b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">alat yang digunakan untuk menyelidiki pemuaian zat padat.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9_KNmqt7W7dofE8G-Kz7lLGSPiWR8_8MzEdQvAR23BfRd5VYi7N0Urb5w9pJToDwN41mjH0OkbIm-P5QsQcoHaKMgFonI1GJJvkgVoBT8yppfhy_IDjfNwUwzdRmYQPsBryc3US_MuoE/s1600/labu+didih.png" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="52" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9_KNmqt7W7dofE8G-Kz7lLGSPiWR8_8MzEdQvAR23BfRd5VYi7N0Urb5w9pJToDwN41mjH0OkbIm-P5QsQcoHaKMgFonI1GJJvkgVoBT8yppfhy_IDjfNwUwzdRmYQPsBryc3US_MuoE/s200/labu+didih.png" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Labu Didih</td></tr></tbody></table><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">2. <b>labu didih: </b></span><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">alat<span style="color: #231f20;"> yang digunakan untuk menyelidiki pemuaian zat cair. <o:p></o:p></span></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><span style="color: #231f20;"><br /></span></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><span style="color: #231f20;"><br /></span></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXnB9kewQvfpcPX7AD6mRg0y4QfiNQLvhxkus4XV4AIWzx5Wz2AQeb81_3pMvbrSePNE3sDVD-h63SiUwlTHD8q61jGXAWru57lv0ggTIoGvSj586g4yjzZBtaOXP5YEiYSQsBI_0kenY/s1600/Dilatometer.png" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="75" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXnB9kewQvfpcPX7AD6mRg0y4QfiNQLvhxkus4XV4AIWzx5Wz2AQeb81_3pMvbrSePNE3sDVD-h63SiUwlTHD8q61jGXAWru57lv0ggTIoGvSj586g4yjzZBtaOXP5YEiYSQsBI_0kenY/s200/Dilatometer.png" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Dilatometer</td></tr></tbody></table><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">3. Dilatometer</span></b><b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">:</span></b><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"> alat yang digunakan untuk menyelidiki pemuaian gas.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">B. Masalah yang ditimbulkan oleh pemuaian dalam kehidupan sehari-hari:<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">1. Pemasangan kaca jendela<o:p></o:p></span></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAsjdWZnmlp21k8K7rEztLaStfFhHIZS_F71ukqYQSEN6k0arILP9Zy0vH1roef0ZSLasP4ff3Z768kcThlbJjjJmHBD4Ddm0hyphenhyphenklRwtJbt5Zlhe6hFVxdi7bxs3vOzG9lC2TzcUE0mMg/s1600/kaca+jendela.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="200" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAsjdWZnmlp21k8K7rEztLaStfFhHIZS_F71ukqYQSEN6k0arILP9Zy0vH1roef0ZSLasP4ff3Z768kcThlbJjjJmHBD4Ddm0hyphenhyphenklRwtJbt5Zlhe6hFVxdi7bxs3vOzG9lC2TzcUE0mMg/s200/kaca+jendela.jpg" width="151" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Kaca Jendela</td></tr></tbody></table><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Tukang kayu merancang ukuran bingkai jendela yang sedikit lebih besar daripada ukuran sebenarnya. Hal ini dilakukan untuk memberi ruang kaca saat terjadi pemuaian. Apabila desain jendela tidak diberi ruangan pemuaian, maka saat kaca memuai akan  mengakibatkan retaknya kaca tersebut.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">2. Celah pemuaian pada sambungan jembatan<o:p></o:p></span></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjxPf29noyHUnquSyV2u0N3olWFxdBj7j-DQEYvD5VFyMi0xLeAEQQkN68wCa6YjehJ4Xul9s3uydrgpyeQu56CjDPsTZgSwu3UWfUWyWdiVHmWfgBqMDcw1D1Fa5_T5brFp8v3d7UOKr0/s1600/jembatan+poncol.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="144" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjxPf29noyHUnquSyV2u0N3olWFxdBj7j-DQEYvD5VFyMi0xLeAEQQkN68wCa6YjehJ4Xul9s3uydrgpyeQu56CjDPsTZgSwu3UWfUWyWdiVHmWfgBqMDcw1D1Fa5_T5brFp8v3d7UOKr0/s200/jembatan+poncol.jpg" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Jembatan</td></tr></tbody></table><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Sambungan antara dua jembatan beton terdapat celah di antaranya. Hal ini bertujuan agar jembatan tersebut tidak melengkung saat terjadi pemuaian.</span><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">3. Sambungan rel kereta api<o:p></o:p></span></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhb12qjbFyv_usolONfEu0s-IgQPeduRhHpgGOFyxcf82dkUj0jnBIzRuIyHIMTd7ulLJeO5B0Qj3abJxCI2jo5f_GHzosULAVKmtrcCsp-f9CelBwb5fI69Qp1e9czm2Q13ko6cNpEg4M/s1600/sambungan+rel+KA.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="125" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhb12qjbFyv_usolONfEu0s-IgQPeduRhHpgGOFyxcf82dkUj0jnBIzRuIyHIMTd7ulLJeO5B0Qj3abJxCI2jo5f_GHzosULAVKmtrcCsp-f9CelBwb5fI69Qp1e9czm2Q13ko6cNpEg4M/s200/sambungan+rel+KA.jpg" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Sambungan Rel KA</td></tr></tbody></table><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Sambungan rel kereta api dibuat ada celah diantara dua batang rel tersebut. Hal ini bertujuan agar saat terjadi pemuaian tidak menyebabkan rel melengkung. <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">4. Kawat telepon atau kawat listrik<o:p></o:p></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaUnE38FuXHv7Jb3U0GbWMgz3Gw7qUWsfD3DSK0ccCmhpO4vsToN4lL-N-jkugac6u0qY7xvb4-KDaC4-40x2xJErfC0mcwB6Tu_Euy6U5tSD8tLUenC7emjXS3nz8OMtLBZU1cyW9BXY/s1600/kawat+telpon.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="192" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjaUnE38FuXHv7Jb3U0GbWMgz3Gw7qUWsfD3DSK0ccCmhpO4vsToN4lL-N-jkugac6u0qY7xvb4-KDaC4-40x2xJErfC0mcwB6Tu_Euy6U5tSD8tLUenC7emjXS3nz8OMtLBZU1cyW9BXY/s200/kawat+telpon.jpg" width="200" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Pemasangan kawat telepon atau kawat listrik dibiarkan kendor saat pemasangannya pada siang hari. Hal ini dilakukan dengan maksud, pada malam hari kawat telepon atau listrik saat mengalami penyusutan kawat tersebut tidak putus.</span><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><o:p></o:p></span><br /><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">C. Manfaat pemuaian dalam kehidupan sehari-hari:<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">1. Pengelingan<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_wNoozr3xqtnq1NuBgzeKrHR79FrNnD0-yzPByX8gNhjWVro4WHqmfQ6FGvk4RagaAASCNHGsT17lNyFUmPo1mKH0ccFmCAX-LBRfKxtPb3APWWJGNssQaxlIgOtRxkKX9Cau3YFjbeo/s1600/pengelingan.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="149" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_wNoozr3xqtnq1NuBgzeKrHR79FrNnD0-yzPByX8gNhjWVro4WHqmfQ6FGvk4RagaAASCNHGsT17lNyFUmPo1mKH0ccFmCAX-LBRfKxtPb3APWWJGNssQaxlIgOtRxkKX9Cau3YFjbeo/s200/pengelingan.jpg" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Pengelingan</td></tr></tbody></table><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Menyambung dua pelat dengan menggunakan paku khusus dengan  proses khusus disebut mengeling. Paku keling yang dipakai untuk mengeling sesuatu dalam keadaan panas sampai berpijar dan dimasukkan ke dalam lubang pelat yang hendak kita keling. Kemudian paku bagian atas dipukul-pukul sampai rata. Setelah dingin paku keling tersebut akan menyusut dan menekan kuat pelat tersebut. Pengelingan dapat kamu jumpai pada pembuatan badan kapal laut.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">2. Keping bimetal<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEixPxZmdjDWUcH_hqdR9YuOa7-ClsjNiFvXd2l5rRxCJd8jR1soYdG8nMT_kx7NHH5up9Chr0srGYqXQh96VTTETzFDSWZUav_aXhhwklG4ePxRJkzsvDqEb4s07exVY_HMNZ2NJogC3oU/s1600/keping+bimetal.png" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="139" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEixPxZmdjDWUcH_hqdR9YuOa7-ClsjNiFvXd2l5rRxCJd8jR1soYdG8nMT_kx7NHH5up9Chr0srGYqXQh96VTTETzFDSWZUav_aXhhwklG4ePxRJkzsvDqEb4s07exVY_HMNZ2NJogC3oU/s200/keping+bimetal.png" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Keping Bimetal</td></tr></tbody></table><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Dua keping logam yang mempunyai koefisien muai panjang berbeda dikeling menjadi satu disebut keping bimetal. Keping bimetal peka terhadap perubahan suhu. Jika keping bimetal dipanaskan, maka akan melengkung ke arah logam yang angka koefisien muai panjangnya kecil. Bila didinginkan, keping bimetal akan melengkung ke arah logam yang angka koefisien muai panjangnya besar. Perbedaan pemuaian ini dipakai sebagai termostat. Termostat adalah alat yang berfungsi ganda sebagai saklar otomatis dan sebagai pengatur suhu. Beberapa alat yang memanfaatkan keping bimetal dalam termostat, antara lain: setrika listrik, almari es, bel listrik, alarm kebakaran, lampu sen mobil atau motor, rice cooker, oven.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: .0001pt; margin-bottom: 0cm;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt; line-height: 115%;">3. Pemasangan bingkai roda logam pada pedati dan kereta api<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgHPGkNHcgtiA3grZJ0urZ5uXYdrzUrcdrMNuXscuxAh8AYUFkOfHKJ8FtcOLkc9B2ofqgxE4RNc_a1reOAf1hFEBzpJOfxLtgAKkBJkrNd-edg0Zli4zv2UMKSkhKU5i8MeUMehsOz8fI/s1600/roda-pedati.gif" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="199" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgHPGkNHcgtiA3grZJ0urZ5uXYdrzUrcdrMNuXscuxAh8AYUFkOfHKJ8FtcOLkc9B2ofqgxE4RNc_a1reOAf1hFEBzpJOfxLtgAKkBJkrNd-edg0Zli4zv2UMKSkhKU5i8MeUMehsOz8fI/s200/roda-pedati.gif" width="200" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Roda Pedati</td></tr></tbody></table><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Roda pedati dan roda kereta api memiliki ukuran lebih kecil daripada ukuran bingkainya. Untuk dapat memasang roda logam tersebut, maka dengan cara pemanasan. Hal ini mengakibatkan roda logam akan mengalami pemuaian. Kemudian roda logam tersebut dipasang pada bingkainya, setelah dingin roda akan menyusut dan terpasang pada bingkainya dengan kuat.</span><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><o:p></o:p></span></b></div><div class="MsoNormal" style="text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: .0001pt; margin-bottom: 0cm;"><b><span style="color: #002060; font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 115%;">Referensi:<o:p></o:p></span></b></div><span style="color: #231f20; font-family: AbadiMT-Condensed, sans-serif; font-size: 9pt;">SUGIYARTO, Teguh. Ilmu pengetahuan alam 1: untuk SMP/MTs/ kelas VII Teguh Sugiyarto, Eny Ismawati — Jakarta : Pusat Perbukuan, Departemen Pendidikan Nasional, 2008.</span><br /><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: #231f20; font-family: "AbadiMT-Condensed","sans-serif"; font-size: 9.0pt; mso-bidi-font-family: AbadiMT-Condensed;">Gambar: dari BSE dan Google Images</span></div>

Kalor dan Pemuaian Penerapan Pemuaian Zat

A. Alat Pengukur Pemuaian Muschembroek 1. Muschenbroek :  alat yang digunakan untuk menyelidiki pemuaian zat padat. Labu Didih 2. labu didih...

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Perpindahan Kalor

<div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">A. Cara Perpindahan Kalor<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Kalor dapat berpindah dari satu tempat ke tempat lain. Kalor dapat berpindah dengan tiga cara, yaitu konduksi atau hantaran, konveksi atau aliran, dan radiasi atau pancaran.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">1) Konduksi atau Hantaran<o:p></o:p></span></b></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhT3VS_hG0R3sHB7hhabj18o2hLUGvtlmND9G2OcTgScyenk_Z5O_N4Vw28WtLeGQ7apM_3wQyCABdLkxPV7EHB9oeX8Q_2m6oCGQiJT9njhB5BYdz57uiM3YKLpUMVpX2SHTDSk02kpw4/s1600/konduksi.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="178" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhT3VS_hG0R3sHB7hhabj18o2hLUGvtlmND9G2OcTgScyenk_Z5O_N4Vw28WtLeGQ7apM_3wQyCABdLkxPV7EHB9oeX8Q_2m6oCGQiJT9njhB5BYdz57uiM3YKLpUMVpX2SHTDSk02kpw4/s200/konduksi.png" width="200" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Konduksi adalah perpindahan kalor melalui suatu zat tanpa disertai perpindahan partikel-partikel zat tersebut.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">2) Konveksi atau Aliran<o:p></o:p></span></b></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnh3YwSh_7K1AhR1OektuXnSULRnZQ_otntTuHaLQAoC9IVL0hN_u_cjrTIobCHQ-lrcCCmxUlkdVttaD3BlpUdIO4C2ptrbziIYg3Kse54KnJJ72tZYjz7POgV6__nTXIJjT-oPr2_hQ/s1600/konveksi.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="166" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnh3YwSh_7K1AhR1OektuXnSULRnZQ_otntTuHaLQAoC9IVL0hN_u_cjrTIobCHQ-lrcCCmxUlkdVttaD3BlpUdIO4C2ptrbziIYg3Kse54KnJJ72tZYjz7POgV6__nTXIJjT-oPr2_hQ/s200/konveksi.jpg" width="200" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Konveksi adalah perpindahan kalor pada suatu zat yang disertai perpindahan partikel-partikel zat tersebut.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">3) Radiasi atau Pancaran<o:p></o:p></span></b></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0JVYbrgxiG3pPisABgXt0Y3-HUgslomPkzdqxq-zD9ATayFsN8V3jmuafjNOZkGE5tixkLgRxojbMlaUVNFLMThBGMWQkQCwokhKts7zowPy74DdnLuw2Vkk1N1ILW3t9ncO4atZXSrc/s1600/api+unggun.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="140" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0JVYbrgxiG3pPisABgXt0Y3-HUgslomPkzdqxq-zD9ATayFsN8V3jmuafjNOZkGE5tixkLgRxojbMlaUVNFLMThBGMWQkQCwokhKts7zowPy74DdnLuw2Vkk1N1ILW3t9ncO4atZXSrc/s200/api+unggun.jpg" width="200" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Radiasi adalah perpindahan kalor tanpa melalui zat perantara.<o:p></o:p></span><br /><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">B. Penerapan Perpindahan Kalor<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhfBewrD8OZYkZ71I8pDP781f7RxmUxrpsKQp_aZVVmKu2a5M9v0w8KKA_HrG_WNCbJ5XcgVF0Z4HVxeiMH_fuA2nEjaIWIOksqI2Muc6n2Luw5IAbD2lsFTUtjDf0ilQ8JR-_thrB3Tf8/s1600/warna+pakaian+cerah.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhfBewrD8OZYkZ71I8pDP781f7RxmUxrpsKQp_aZVVmKu2a5M9v0w8KKA_HrG_WNCbJ5XcgVF0Z4HVxeiMH_fuA2nEjaIWIOksqI2Muc6n2Luw5IAbD2lsFTUtjDf0ilQ8JR-_thrB3Tf8/s200/warna+pakaian+cerah.JPG" width="200" /></a></div><br /><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">1) Pada siang hari yang panas, orang lebih suka memakai baju cerah daripada baju gelap. Hal ini bertujuan untuk mengurangi penyerapan kalor.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2LRSzaWBmGISUSjgoISQdMQo7g7CQYCSURF74igZlgl4mNWdZGXHHfw3kubpVbQbkp33vfsjLIEyz9tWHKbJJochMZsQjOlhRoNnlvEJEDNUv3bMF24PMTnOehkzNXyFlUlDuZqkxp-0/s1600/warna+mobil.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="130" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2LRSzaWBmGISUSjgoISQdMQo7g7CQYCSURF74igZlgl4mNWdZGXHHfw3kubpVbQbkp33vfsjLIEyz9tWHKbJJochMZsQjOlhRoNnlvEJEDNUv3bMF24PMTnOehkzNXyFlUlDuZqkxp-0/s200/warna+mobil.jpg" width="200" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;">2) Cat mobil atau motor dibuat mengkilap untuk mengurangi </span><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;">penyerapan kalor.</span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: 'Times New Roman', serif; font-size: 14pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIAgFTItqYesOilU2GDgYlsa9s-zvYrvN1vw5dumq753MUzdUBbrU04mWmWW3iiYe8qRmJVy1UMEV5pjTLElAMpHiSlcr1JCKxd3XtXr60zdRAjiO_LzP7C_h3Qsjam9HnI8iGybQnzoo/s1600/baju+hangat.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIAgFTItqYesOilU2GDgYlsa9s-zvYrvN1vw5dumq753MUzdUBbrU04mWmWW3iiYe8qRmJVy1UMEV5pjTLElAMpHiSlcr1JCKxd3XtXr60zdRAjiO_LzP7C_h3Qsjam9HnI8iGybQnzoo/s200/baju+hangat.jpg" width="200" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">3) Mengenakan jaket tebal atau meringkuk di bawah selimut tebal saat udara dingin badan merasa nyaman.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQugYtdMU6rLBL9w-p3vCiQD4D7hIduK4acwl8M1lYokBAr5QuvxG61hjNkOSzp7nXKYY_T0oS-M7y6x8NPajLhRJAwUJJxVwJ5X0XpmWH0WStFZBZiQcx22_U2bzApPfIIIgdVmXcA6w/s1600/termos.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="200" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQugYtdMU6rLBL9w-p3vCiQD4D7hIduK4acwl8M1lYokBAr5QuvxG61hjNkOSzp7nXKYY_T0oS-M7y6x8NPajLhRJAwUJJxVwJ5X0XpmWH0WStFZBZiQcx22_U2bzApPfIIIgdVmXcA6w/s200/termos.jpg" width="200" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #231f20; font-family: "Times New Roman","serif"; font-size: 14.0pt;">4) Dinding termos dilapisi perak.<o:p></o:p></span></div><div class="MsoNormal"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">C. Terjadinya Angin Darat dan Angin Laut<o:p></o:p></span></b></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">1) Angin Laut<o:p></o:p></span></b></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5eMditeRC7UUgrwMAhmN7ElPXgFpLHSpJDukulD3c2jvSq_mPg3Cnp8Css1FFrebqJkWsErXkJ2nIxv0NJDBkkCaM9azFpuIzb6DW6caFt1vGy8QMMeTlBUzNa8C-jmLGElY30fxgO4U/s1600/angin+laut.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5eMditeRC7UUgrwMAhmN7ElPXgFpLHSpJDukulD3c2jvSq_mPg3Cnp8Css1FFrebqJkWsErXkJ2nIxv0NJDBkkCaM9azFpuIzb6DW6caFt1vGy8QMMeTlBUzNa8C-jmLGElY30fxgO4U/s1600/angin+laut.jpg" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Pada siang hari daratan lebih cepat panas daripada lautan. Hal ini mengakibatkan udara panas di daratan akan naik dan tempat tersebut diisi oleh udara dingin dari permukaan laut, sehingga terjadi gerakan udara dari laut menuju ke darat yang biasa disebut angin laut. Angin laut terjadi pada siang hari, biasa digunakan oleh nelayan tradisional untuk pulang ke daratan.<o:p></o:p></span><br /><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><b><span style="color: #00b0f0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">2) Angin Darat<o:p></o:p></span></b></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3-16ifDW76zf9n2ril2KkySuZGbxiO9kxR8RjaMZ1OAYv_O6-5F90q5igGRXEjxte4pTOPczJVEEIN2F9Uitakz9ho2YJ1E9jOiJVgf_fOVdtE0y4HGdBVibNTmx-8S17BEXPsO2EiSw/s1600/angin+darat.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="220" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3-16ifDW76zf9n2ril2KkySuZGbxiO9kxR8RjaMZ1OAYv_O6-5F90q5igGRXEjxte4pTOPczJVEEIN2F9Uitakz9ho2YJ1E9jOiJVgf_fOVdtE0y4HGdBVibNTmx-8S17BEXPsO2EiSw/s320/angin+darat.jpg" width="320" /></a></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;">Pada malam hari daratan lebih cepat dingin daripada lautan. Hal ini mengakibatkan udara panas di permukaan air laut akan naik dan tempat tersebut diisi oleh udara dingin dari daratan, sehingga terjadi gerakan udara dari darat menuju ke laut yang biasa disebut angin darat. Angin darat terjadi pada malam hari, biasa digunakan oleh nelayan tradisional untuk melaut mencari ikan.<o:p></o:p></span><br /><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span><span style="font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;"><br /></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #0070c0; font-family: "Times New Roman","serif"; font-size: 14.0pt;">Referensi:<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #002060; font-family: "AbadiMT-Condensed","sans-serif"; font-size: x-small; mso-bidi-font-family: AbadiMT-Condensed;">Ilmu pengetahuan alam 1 : untuk SMP/MTs/ kelas VII Teguh Sugiyarto, Eny Ismawati — Jakarta : Pusat Perbukuan, Departemen Pendidikan Nasional, 2008.<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><span style="color: #002060; font-family: "AbadiMT-Condensed","sans-serif"; font-size: x-small; mso-bidi-font-family: AbadiMT-Condensed;">Ilmu pengetahuan alam 1 : untuk SMP/MTs/ kelas VII Teguh Wasis, Sugeng Iriyanto — Jakarta : Pusat Perbukuan, Departemen Pendidikan Nasional, 2008.<o:p></o:p></span></div><span style="color: #002060; font-family: AbadiMT-Condensed, sans-serif; font-size: x-small; text-align: justify;">Gambar dari google images </span>

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