Question detail
Which of the following best describes the role of thermal insulation in reducing wasted energy in a household heating system?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Conservation and dissipation of energy
Question
- A. It increases the amount of heat that can be transferred to the air
- B. It reduces the amount of heat that escapes through walls
- C. It raises the temperature of the heating source
- D. It converts useful heat into electrical energy
Answer
It reduces the amount of heat that escapes through walls
Explanation
The correct option is "It reduces the amount of heat that escapes through walls". It reduces the amount of heat that escapes through walls is right because it directly matches Energy transfers in a system: Required practical activity 2 (physics only): investigate the effectiveness of different materials as thermal insulators.. 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
Misunderstanding Thermal Insulation
Students often think that all materials are equally effective as thermal insulators without considering their thermal conductivity.
To fix this, students should investigate and compare the thermal conductivity of different materials to understand which ones are better insulators.
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