Question detail
In a closed system experiment to test insulation, which of the following would best demonstrate that no net change in total energy occurs?
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. A heated metal block placed in a vacuum chamber with no heat loss
- B. A hot cup of tea left in a room with no external heat source
- C. A warm room with a window open to the outside
- D. A cold room with a heater running continuously
Answer
A heated metal block placed in a vacuum chamber with no heat loss
Explanation
The correct option is "A heated metal block placed in a vacuum chamber with no heat loss". A heated metal block placed in a vacuum chamber with no heat loss 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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