Geothermal energy is a _______________________ source of energy?
Correct answer: C. renewable
- A. non-renewable
- B. stable
- C. renewable
- D. none of the above
Explanation
Geothermal energy uses heat from inside the Earth, which is continually replenished by natural geological processes, so it is classified as renewable. Non-renewable, the likely mistaken choice, applies to finite fuels such as coal, oil and natural gas.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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