Physics Practice: Heat & Energy (Mock Test 2 - Intermediate)
1. The amount of heat required to raise the temperature of $1\text{ g}$ of water by $1^\circ\text{C}$ is called:
2. On the Kelvin scale, the boiling point of water is:
3. Thermal expansion of solids is ________ than the thermal expansion of liquids.
4. Why are gaps left between railway tracks?
5. Which of the following is the best conductor of heat?
6. Convection currents do not form in ________.
7. A shiny, polished surface is a ________ absorber of heat.
8. The energy transformation in a hydroelectric power plant is:
9. Global warming is mainly due to an increase in ________ gas in the atmosphere.
10. Sea breeze blows during the ________.
11. A bimetallic strip bends when heated because of the difference in ________ of the two metals.
12. Which of the following is a non-renewable source of energy?
13. The absolute zero temperature is equal to ________.
14. When a gas is cooled, its volume usually ________.
15. In a thermos flask, vacuum between the two walls prevents heat loss by:
16. The specific heat capacity of water is approximately ________ $\text{J kg}^{-1}\text{ K}^{-1}$.
17. Heat energy travels through vacuum by ________.
18. Potential energy of a body of mass $m$ at height $h$ is given by:
19. A black surface ________ more heat than a white surface.
20. Which principle is used to measure the heat exchanged between bodies?