Quiz about Energy Test Review

Question 1

Energy is defined as:

Accepted Answer

The ability to do work or produce change

Answer

The capacity to hold information

Answer

The potential to create matter

Answer

The force exerted by an object

Question 2

Work is defined as the product of ______ and distance.

Accepted Answer

force

Answer

mass

Answer

velocity

Answer

acceleration

Question 3

Power is defined as the rate at which ______ is done.

Accepted Answer

work

Answer

energy

Answer

force

Answer

momentum

Question 4

Name the type of energy transformation shown in the image.

Accepted Answer

Chemical to thermal and light energy

Answer

Mechanical to electrical energy

Answer

Electrical to mechanical energy

Answer

Nuclear to electrical energy

Question 5

Name the type of energy transformation shown in the image.

Accepted Answer

Chemical to mechanical energy

Answer

Mechanical to electrical energy

Answer

Thermal to chemical energy

Answer

Electrical to thermal energy

Question 6

Name the type of energy transformation shown in the image.

Accepted Answer

Mechanical to sound energy

Answer

Radiant to sound energy

Answer

Chemical to radiant energy

Answer

Electrical to sound energy

Question 7

Name the type of energy transformation shown in the image.

Accepted Answer

Electrical to mechanical energy

Answer

Mechanical to electrical energy

Answer

Chemical to electrical energy

Answer

Thermal to mechanical energy

Question 8

Name the type of energy transformation shown in the image.

Accepted Answer

Nuclear to thermal energy

Answer

Thermal to electrical energy

Answer

Chemical to electrical energy

Answer

Mechanical to electrical energy

Question 9

Name the type of energy transformation shown in the image.

Accepted Answer

Electrical to mechanical energy

Answer

Mechanical to electrical energy

Answer

Chemical to electrical energy

Answer

Thermal to mechanical energy

Question 10

Name the type of energy transformation shown in the image.

Accepted Answer

Chemical to mechanical energy

Answer

Electrical to thermal energy

Answer

Nuclear to electrical energy

Answer

Solar to chemical energy

Question 11

What should "lost" energy really be classified as?

Accepted Answer

Thermal energy

Answer

Kinetic energy

Answer

Potential energy

Answer

Chemical energy

Question 12

Use the following diagram to answer the questions below: The object will have a minimum gravitational potential energy at point __________.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 13

As the object moves from point A to point D across the surface, the sum of its gravitational potential and kinetic energies ________.

Accepted Answer

remains the same

Answer

decreases, only

Answer

decreases and then increases

Answer

increases and then decreases

Question 14

A force of 20 N is applied downward to a box and it moves 13 meters, how much work was done on the box?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

260 J

Answer

200 J

Answer

130 J

Answer

2600 J

Question 15

You must exert a force of 4.5 N on a book to slide it across a table. If you do 2.7 J of work in the process, how far have you moved the book?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

0.6 meters

Answer

1.2 meters

Answer

0.9 meters

Answer

2.0 meters

Question 16

A child pulls a sled up a snow-covered hill. The child does 405 J of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

27 N

Answer

30 N

Answer

35 N

Answer

40 N

Question 17

If 16,700 J of work is done to shoot the human cannonball down a 3.05 m barrel, then how much force is applied to the person to fire them out the cannon?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

5,475 N

Answer

5,000 N

Answer

4,500 N

Answer

5,475 J

Question 18

How much time is needed to produce 720 Joules of work if 90 watts of power is used?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

6 seconds

Answer

8 seconds

Answer

10 seconds

Answer

12 seconds

Question 19

A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

360 W

Answer

36 W

Answer

3600 W

Answer

600 W

Question 20

If a runner exerts 350 J of work to make 125 W of power, then how long did it take the runner to do the work?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

3.5 seconds

Answer

2.8 seconds

Answer

4.2 seconds

Answer

5.0 seconds

Question 21

If 360 N of force are needed to move a crate a distance of 4 meters in 5 sec, what is the power used?

work?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

144 Watts

Answer

72 Watts

Answer

288 Watts

Answer

360 Watts

Question 22

Two physics students, Will N. Andable and Ben Pumpiniron, are in the weightlifting room. Will lifts the 100-pound barbell over his head 10 times in one minute; Ben lifts the 100-pound barbell over his head 10 times in 10 seconds. a. Which student does the most work? ________________ b. Which student delivers the most power? ________________ c. Explain your answers.

Accepted Answer

Both do the same work. b. Ben delivers the most power. c. Work is the same, but power is work done per unit time, and Ben does it faster.

Answer

Will does more work. b. Will delivers the most power. c. Will is stronger than Ben.

Answer

Ben does more work. b. Both deliver the same power. c. Ben is faster, so he does more work.

Answer

Both do the same work. b. Will delivers the most power. c. Will takes more time, so he is more powerful

Question 23

You apply 17.5 N of force to a large rock and it does not move. How much work was done?

$$W\ =\ F\ \cdot\ d$$

$$P\ =\frac{W}{t}$$

Accepted Answer

0 J

Answer

17.5 J

Answer

8.75 J

Answer

35 J

Question 24

What is the correct unit for Power?

Accepted Answer

Watts

Answer

Newtons

Answer

Joules

Answer

Energy

Question 25

What is gravitational potential energy?

Accepted Answer

Gravitational potential energy is the energy stored in an object as a result of its vertical position or height in a gravitational field.

Answer

Energy related to an object's mass only

Answer

Energy that is always constant regardless of position

Answer

Energy produced by friction between two surfaces

Question 26

What is the total mechanical energy of a system?

Accepted Answer

Total mechanical energy = Potential Energy + Kinetic Energy

Answer

Total mechanical energy = Mass x Acceleration

Answer

Total mechanical energy = Work Done - Friction

Answer

Total mechanical energy = Force x Distance

Question 27

Which has the lowest kinetic energy?

Accepted Answer

Question 28

A rolling ball eventually comes to a stop. Where did the energy in the ball go?

Accepted Answer

It was converted to thermal energy through friction.

Answer

It was destroyed.

Answer

It was transferred to the grass.

Answer

It disappeared like magic.rollinrol

Question 29

What is the energy transformation of a burning match?

Accepted Answer

Chemical to thermal & light

Answer

Thermal to chemical & smell.

Answer

Chemical to electrical & nuclear

Answer

Gravitational to mechanical to electrical

Question 30

Energy associated with motion is:

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Thermal energy

Answer

Nuclear energy

Question 31

When you rub your hands together on a cold day, you use friction to convert _____

Accepted Answer

mechanical energy into thermal energy

Answer

thermal energy into nuclear energy

Answer

nuclear energy into electrical energy

Answer

electrical energy into electromagnetic energy

Question 32

Potential energy that depends on height is called _____.

Accepted Answer

gravitational potential energy

Answer

thermal energy

Answer

elastic potential energy

Answer

kinetic energy

Question 33

A compressed spring has __________________potential energy.

Accepted Answer

elastic

Answer

mechanical

Answer

thermal

Answer

chemical

Question 34

"Energy cannot be created or destroyed"

Accepted Answer

Law of conservation of energy

Answer

Law of energy transformation

Answer

Law of energy types

Answer

Law of total mechanical energy

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