Temperature, heat and thermal energy Quiz
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5 questions, one answer each
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1. Which is the unit of thermal energy?
- A. Degree Celsius
- B. Joule
- C. Kelvin
- D. Watt
2. What is 25 °C in kelvin?
- A. 248 K
- B. 25 K
- C. 298 K
- D. 273 K
3. A cup of hot tea is placed next to a glass of cold milk. What happens to thermal energy?
- A. It flows from the tea to the milk until their temperatures are equal
- B. It flows from the milk to the tea
- C. It stays in the tea
- D. It flows until the milk is hotter
4. Which state of matter expands most for the same rise in temperature?
- A. Solid
- B. Liquid
- C. They all expand equally
- D. Gas
5. Why does a bimetallic strip bend when heated?
- A. The particles in the metals get bigger
- B. The two metals expand by different amounts
- C. The metals melt
- D. The metals contract equally