1. QUIZZ ENERGY, WORK AND POWER
NAME AND SURNAME:
CLASS GROUP: DATE:
1. The ability to do work is called:
A energy B work C power
2. Energy is measured in:
A newtons B joules C horsepower
3. Stored energy is correctly termed:
A radiant energy B potential energy C kinetic energy
4. Moving energy is correctly termed:
A kinetic energy B thermal energy C potential energy
5. An example of chemical potential energy is the energy of:
A a stereo playing music B a moving arrow C food
6. An example of gravitational potential energy is the energy of:
A any object at a height B any chemical C all moving objects
7. An example of elastic potential energy is the energy of:
A a compressed spring B a stretched rubber band C both of the above
8. The energy of a ball flying through the air is:
A only kinetic energy B kinetic and potential energy C sound and heat energy
9. The main type of energy of stereos and computers is:
A nuclear energy B electrical energy C heat energy
10. Mass × Gravitational acceleration × Height is the rule to calculate:
A gravitational potential energy B kinetic energy C heat energy
11. 1⁄2 × Mass × Velocity-squared is the rule to calculate:
A heat energy B kinetic energy C potential energy
12. "Energy cannot be created nor destroyed in any chemical reaction. It can only be changed
from one form to another." This is known as the Law of:
A Energy Transfer B Energy Transformation C Conservation of Energy

2. 13. An energy transformation occurs when:
A one form of energy changes to another energy form in the same object
B the form of energy remains the same type but is moved from one object to another
C matter transforms to make energy in nuclear reactions
14. An energy transfer occurs when:
A energy forms matter as in the formation of the universe
B one form of energy changes to another energy form in the same object
C the form of energy remains the same type but is moved from one object to another
15. When heat from a stove is used to boil water in a saucepan, this is an example of:
A an energy transformation B an energy transfer C energy translocation
16. If a force moves an object or changes its direction, what is being done?
A power B energy in joules C work
17. The unit used to measure Work is:
A horsepower B newtons C joules
18. The rule for calculating Work is:
A force × distance B mass / volume C energy / time
19. Who does more work - a man who lifts a large box from the ground up into the back of a
truck, or a man who puts the same box on a trolley and wheels it up a ramp into the truck?
A the man who lifts it B the man with the trolley C they do the same work
20. A weightlifter lifts barbells of 200 newtons above his head to a height of 2 metres. How
much work does he do?
A 400 newtons B 100 joules C 400 joules
21. Energy and work use the same unit of the Joule because:
A that is the unit chosen by the scientist named Pascal who studied heat
B energy is required to do work
C both measure the speed at which power is used
22. One kilojoule equals:
1
A 1000 joules B 100 joules C ⁄1000 joule

3. 23. The old imperial unit for energy was the:
A basal energy requirement B calorie C kilojoule
24. The rate at which work is done is called:
A power B work C energy
25. Power is measured in:
A joules B watts C newtons
26. The rule for the calculation of power is:
A joules / seconds B energy × time C work / time
27. 1 watt is equivalent to:
1
A 1 joule per second B ⁄10 newton per metre C 1 newton metre
28. The old imperial unit for power was the:
A kelvin B horsepower C kilojoule
29. If 100 joules of work was done in 10 seconds, what power was used?
A 1 kilowatt B 10 watts C 1000 watts
30. If a weightlifter lifts 2000 newtons to a height of 2 metres in 4 seconds, how powerful is he?
A 1 horsepower B 1 watt C 1 kilowatt