Question detail
Which statement best describes energy transfers in a closed 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. The total energy stays constant while energy moves between stores.
- B. The total energy decreases because useful energy is used up.
- C. Only kinetic energy is allowed inside a closed system.
- D. Energy must enter from outside whenever heating occurs.
Answer
The total energy stays constant while energy moves between stores.
Explanation
In a closed system, energy is conserved. Stores can change, but the total energy remains the same. This is why answers should describe transfers and dissipation rather than saying energy disappears.
Common mistake
Misunderstanding Closed Systems
Students often think that energy can be created or destroyed in a closed system.
Emphasize that in a closed system, energy is conserved and can only be transferred or transformed, not created or destroyed.
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