Mud houses are cooler in summer and warmer in winter because ---------
Correct answer: C. Mud is a bad conductor of heat
- A. Mud is a good conductor of heat
- B. Mud is a superconductor of heat
- C. Mud is a bad conductor of heat
- D. Heat is first given out and then taken out
Explanation
Option C is correct. Mud is a bad conductor of heat, meaning it does not transfer heat efficiently. In summer, the mud walls slow the transfer of external heat into the house, keeping it cooler. Similarly, in winter, the mud traps heat inside, maintaining a warmer environment. Why other options are incorrect: Option A is incorrect because mud is not a good conductor of heat; it is an insulator. Option B is incorrect because superconductivity refers to electrical conductivity, not thermal, and mud does not possess such properties. Option D is incorrect as it suggests a process that doesn't happen with mud in terms of heat transfer.
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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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