GCSE Physics – Efficiency of a system
Learning Objectives
-I can describe efficiency
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Question 1 of 16
1. Question
Can energy be transferred in a system?
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Question 2 of 16
2. Question
What does a closed system mean?
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Question 3 of 16
3. Question
What is the net energy change of a closed system?
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Question 4 of 16
4. Question
How else can efficiency be defined?
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Question 5 of 16
5. Question
What is the equation for efficiency?
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Question 6 of 16
6. Question
What are the units for efficiency?
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Question 7 of 16
7. Question
What is the maximum possible efficiency?
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Question 8 of 16
8. Question
Why might a system not be 100% efficient?
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Question 9 of 16
9. Question
What type of energy is wasted in all electrical appliances?
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Question 10 of 16
10. Question
What type of energy is gravitational potential energy converted to when an object falls?
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Question 11 of 16
11. Question
What energy is wasted in a kettle?
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Question 12 of 16
12. Question
What energy is a wasted form in a light?
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Question 13 of 16
13. Question
What energy is a wasted form in a car’s brakes?
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Question 14 of 16
14. Question
How can a building be warmed up?
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Question 15 of 16
15. Question
How does lubrication improve efficiency?
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Question 16 of 16
16. Question
How does insulation improve efficiency?
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