Question detail
In a closed system, what happens to the total energy?
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 can be created or destroyed.
- B. It remains constant with no net change.
- C. It increases over time.
- D. It decreases over time.
Answer
It remains constant with no net change.
Explanation
The correct option is "It remains constant with no net change.". It remains constant with no net change. is right because it directly matches Energy transfers in a system: Explain that energy is often dissipated into less useful stores during system changes.. 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 Energy Dissipation
Students often think that energy can be created or destroyed during system changes.
Emphasize that energy is conserved and can only be transferred or dissipated into less useful stores.
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