GCSE Physics – Introduction to efficiency
Learning Objectives
-I can describe efficiency
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Question 1 of 14
1. Question
Why might a system not be 100% efficient?
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Question 2 of 14
2. Question
What does a closed system mean?
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Question 3 of 14
3. Question
Can energy be transferred in a system?
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Question 4 of 14
4. Question
What is the net energy change of a closed system?
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Question 5 of 14
5. Question
What energy is wasted in a kettle?
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Question 6 of 14
6. Question
What energy is a wasted form in a light?
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Question 7 of 14
7. Question
What energy is a wasted form in a car’s brakes?
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Question 8 of 14
8. Question
What type of energy is GPE converted to when an object falls?
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Question 9 of 14
9. Question
What type of energy is wasted in all electrical appliances?
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Question 10 of 14
10. Question
What is the maximum possible efficiency?
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Question 11 of 14
11. Question
How does lubrication improve efficiency?
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Question 12 of 14
12. Question
How does insulation improve efficiency?
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Question 13 of 14
13. Question
How can a building be warmed up?
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Question 14 of 14
14. Question
What are the units for efficiency?
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