Latihan Soal Dan Jawaban Evaluasi Bab VIII BUKU KURIKULUM 2013 IPA

Latihan Soal Dan Jawaban Evaluasi Bab VIII BUKU KURIKULUM 2013 IPA




1. Kalor menyatakan banyaknya panas yang berpindah dari suatu benda.
2. Panci, air, udara di sekitar panci, logam kompor gas.
3. Maksudnya, setiap untuk meleburkan satu gram es memerlukan kalor 80 kalori.
4. Persamaan: sama-sama memerlukan medium. Perbedaan: pada konveksi, partikel-partikel medium ikut berpindah.
5. Untuk mendinginkan suhu tubuhnya; dengan menjulurkan lidahnya, maka akan terjadi penguapan dari permukaan lidah dan bagian mulut anjing, untuk menguap perlu kalor.
Penerapan
6. Q = 2 kg � 50 K � 4200 J/kg K = 42.000 J
7.
8. C. Zat cair tertentu menguap lebih cepat dibanding jenis zat cair yang lain.
9. Sendok logam. Logam termasuk konduktor, sehingga panas cepat terhantar ke seluruh bagiannya di banding plastik dan kayu.

Berpikir Kritis
Marmer dan keramik menghantarkan panas lebih baik dibanding karpet. Saat tubuh mengenai  marmer (atau keramik), panas tubuh dengan mudah berpindah ke marmer, sehingga tubuh terasa dingin.

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