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

QUIZZ ENERGY, WORK AND POWER NAME AND SURNAME: CLASS GROUP: DATE:

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:

A 1000 joules B 100 joules C 1⁄1000 joule

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:

A 1 joule per second B 1⁄10 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