Question detail
What does ?no net change? mean for energy 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 energy after the transfer equals the energy before the transfer.
- B. No object inside the system can move or heat up.
- C. Thermal stores do not count as part of the total energy.
- D. Energy is destroyed if it becomes less useful.
Answer
The energy after the transfer equals the energy before the transfer.
Explanation
No net change means total energy is conserved. Energy may become less useful, for example by spreading into thermal stores, but it is still part of the system?s total energy.
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.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.