Question detail
Which example best shows a system chosen for an energy-store analysis?
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 kettle and water are considered together while electrical energy heats the water.
- B. Only the plug is considered because all energy must stay in the plug.
- C. The room is ignored because energy cannot transfer to surroundings.
- D. The word system always means the whole universe in GCSE questions.
Answer
A kettle and water are considered together while electrical energy heats the water.
Explanation
The kettle and water can be treated as the chosen system because the question is interested in energy transferred electrically into the water?s thermal store. The system is selected to suit the calculation or explanation.
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.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.