
Quiz Kalor dan Energi
Quiz
•
Science
•
7th Grade
•
Hard
Endang Kurniasih
FREE Resource
42 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ketika air kopi baru diseduh, terasa sangat panas. Setelah dibiarkan beberapa menit, suhunya menurun. Fenomena ini menunjukkan bahwa …
kalor berpindah dari air ke lingkungan
air menyerap kalor dari udara
jumlah molekul air berkurang
massa air berkurang
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seorang dokter menggunakan termometer raksa untuk mengukur suhu tubuh pasien. Mengapa tidak menggunakan air sebagai pengisi termometer?
air tidak berwarna
air mudah mendidih
air membasahi dinding tabung
air memuai sedikit
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suhu udara di kota A adalah 30°C. Tentukan nilai dalam °F.
72°F
80°F
86°F
90°F
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rel kereta api dipasang dengan sambungan renggang. Hal ini bertujuan agar …
rel tidak cepat berkarat
rel tidak bengkok saat memuai
memudahkan pemasangan rel
memperkuat rel terhadap beban
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pagar aluminium panjangnya 2 m pada suhu 25°C. Jika koefisien muai panjang = 0,000025/°C, tentukan panjangnya pada 75°C.
2,025 m
2,05 m
2,075 m
2,1 m
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ketika 200 g air dipanaskan dari 25°C menjadi 75°C, energi yang diperlukan (c = 4200 J/kg°C) adalah …
21.000 J
31.500 J
42.000 J
105.000 J
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Es bermassa 1 kg dileburkan pada 0°C. Jika kalor lebur es = 336.000 J/kg, maka kalor yang diperlukan adalah …
33.600 J
336.000 J
3.360.000 J
336 J
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