Question detail
Which statement avoids a common mistake about systems?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
- A. A system is selected for analysis; it does not have to be perfectly isolated.
- B. A system means energy has been lost and cannot be traced.
- C. A system can only contain one energy store at a time.
- D. A system is always another word for a power station.
Answer
A system is selected for analysis; it does not have to be perfectly isolated.
Explanation
GCSE questions often ask students to choose or interpret a system. It is not automatically isolated, and it can contain multiple stores and objects. The key is clear energy accounting.
Common mistake
Misunderstanding System Definition
Students often think a system can only be a single object rather than a group of objects considered together.
Emphasize that a system can include multiple objects interacting with each other, not just one.
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