Question detail

What effect does increasing wall thickness have on the rate of cooling in 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. It increases the rate of cooling
B. It decreases the rate of cooling
C. It has no effect on the rate of cooling
D. It makes the building warmer

Answer

It decreases the rate of cooling

Explanation

The correct option is "It decreases the rate of cooling". It decreases the rate of cooling is right because it directly matches Energy transfers in a system: Describe how thermal conductivity affects the rate of energy transfer by conduction.. 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 with wall thickness

Students often think that a material’s thermal conductivity alone determines how quickly heat passes through a wall, ignoring the role of wall thickness.

Explain that the rate of heat transfer by conduction is proportional to the material’s thermal conductivity but inversely proportional to the wall’s thickness; both properties together determine the overall heat transfer rate.

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