Question detail

What effect does wall thickness have on the rate of cooling of a building?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Conservation and dissipation of energy

Question

A. Thicker walls slow down the cooling rate
B. Thicker walls have no effect on cooling rate
C. Thicker walls speed up the cooling rate
D. Thinner walls slow down the cooling rate

Answer

Thicker walls slow down the cooling rate

Explanation

The correct option is "Thicker walls slow down the cooling rate". Thicker walls slow down the cooling rate is right because it directly matches Energy transfers in a system: Describe how thermal conductivity of wall materials affects the rate of cooling of a building.. The other options are less suitable because they change the required Physics relationship, confuse the relevant energy store or use a distractor that does not answer the question.

Common mistake

Confusing Thermal Conductivity

Students often confuse thermal conductivity with insulation effectiveness, thinking that higher thermal conductivity means better insulation.

Remember that higher thermal conductivity means materials transfer heat more easily, which is not ideal for insulation. Lower thermal conductivity is better for reducing heat loss.

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