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Year 8 Physics Revision - All topics

Total questions: 100

Worksheet time: 2hrs 49mins

Name
Class
Date
1.
Which is the energy in motion?
a)
potential energy
b)
chemical energy
c)
thermal energy
d)
kinetic energy
2.
Which is the energy that is heat?
a)
solar energy
b)
thermal energy
c)
sound energy
d)
potential energy
3.
Which type of energy is this?
a)
electrical energy
b)
thermal energy
c)
sound energy
d)
chemical energy
4.
Which type of energy is this?
a)
electrical energy
b)
thermal energy
c)
sound energy
d)
chemical energy
5.
Which type of energy is this?
a)
electrical energy
b)
thermal energy
c)
sound energy
d)
chemical energy
6.
Which type of energy is this?
a)
kinetic energy
b)
potential energy
c)
chemical energy
d)
radiant energy
7.
Which type of energy is this?
a)
kinetic energy
b)
potential energy
c)
chemical energy
d)
radiant energy
8.

Which type of energy is this?

a)

kinetic energy

b)

elastic potential energy

c)

chemical energy

d)

gravitational potential energy

9.

What letter has the greatest potential energy.

a)

A

b)

D

c)

F

d)

G

10.

Greatest Kintetic energy.

a)

A

b)

B

c)

C

d)

D

11.

What type of potential energy do the skiers have?

a)

Kinetic

b)

Chemical

c)

Sloped

d)

Gravitational

12.

Which skier has the greatest potential energy?

a)

Yellow

b)

Blue

13.

The greatest potential energy is at point?

a)

B

b)

C

c)

D

d)

E

14.
Energy can be created.
a)
True
b)
False
15.
Energy cannot be destroyed.
a)
True 
b)
False
16.
When something is dropped, what type of energy transfer takes place?
a)
Kinetic -> Potential
b)
Gravitational Potential -> Kinetic -> Sound
c)
Electrical -> Chemical
d)
Heat -> Nuclear
17.
During photosynthesis, what type of energy transfer takes place?
a)
Heat -> Chemical Potential
b)
Chemical Potential -> Light
c)
Light -> Chemical Potential
d)
Heat -> Light
18.
Food has _______ potential energy that our bodies transform into kinetic energy.
a)
Elastic
b)
Nuclear 
c)
Gravitational
d)
Chemical
19.
Which of the following best describes the energy transfer that takes place when you use a battery?
a)
Chemical PE -> Electrical
b)
Electrical -> Chemical PE
c)
Nuclear PE -> Electrical
d)
Electrical -> Nuclear PE
20.
Energy is the ability _____________.
a)
to do work
b)
to power things
c)
to move objects
d)
to turn on a light
21.

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

a)

mechanical to heat

b)

sound to mechanical

c)

potential to kinetic

d)

kinetic to potential

22.

As a roller coaster goes downhill

a)

kinetic energy is converted into potential energy.

b)

potential energy is converted into kinetic energy.

c)

electrical energy is converted into potential energy.

d)

potential energy is converted into electrical energy.

23.

When gasoline is burned in a car engine, ________ energy is converted into _________ energy.

a)

heat, chemical

b)

chemical, potential

c)

mechanical, chemical

d)

chemical, mechanical

24.

Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed into

a)

electrical energy.

b)

mechanical motion.

c)

heat and light energy.

d)

electrical and heat energy.

25.

Conduction occurs more easily between solids and liquids. This is because the particles in gases are

a)

farther apart and move faster.

b)

closer together and move faster.

c)

further apart and move more slowly.

d)

closer together and move more slowly.

26.

Energy is transferred in solids by conduction, which means that

a)

heat travels in both directions.

b)

heat travels from the cooler object to the hotter object.

c)

heat travels from the hotter object to the cooler object.

d)

heat does not travel between objects of different temperatures.

27.

Marina is using a metal spoon to stir her soup. Why does the spoon feel warm?

a)

Stirring creates heat energy in the spoon.

b)

Marina’s hand warms the spoon she is holding.

c)

Heat energy from the soup is transferred to the spoon.

d)

Heat energy from the spoon is transferred to the soup.

28.

The light bulb converts electrical energy into light and _________.

a)

chemical

b)

electromagnetic

c)

heat

d)

nuclear

29.

A drawn bow possesses mechanical energy in the form of _______________. After the arrow is released, the energy is transformed into _________________.

a)

potential energy; mechanical energy

b)

elastic potential energy; kinetic energy

c)

gravitational potential energy; kinetic energy

d)

elastic kinetic energy; mechanical kinetic energy

30.

A pole vaulter runs forward, plants his pole, rises in the air and lands. What point represents his greatest amount of gravitational potential energy?

a)

when he initially lands

b)

as he runs forward to plant the pole

c)

just before he starts to fall to the ground

d)

after take-off as the pole expands and lifts the vaulter toward the bar

31.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
32.

A skier on top of a mountain is an example of

a)

Kinetic

b)

Potential

c)

Thermal

d)

Sound

33.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
34.
__________ is stored energy. 
a)
Potential
b)
Kinetic
c)
None of the above 
d)
All of the above 
35.
What kind of energy do scissors use?
a)
Thermal
b)
Electrical
c)
Mechanical
d)
Solar
36.

Which 2 types of energy does the object in the image use?

a)

Electric and Thermal

b)

Nuclear and Elastic

c)

Chemical and Mechanical

d)

Sound and Elastic

37.

Which option is the correct unit of measurement for energy?

a)

Joule (J)

b)

Kilogram (kg)

c)

Newton (N)

d)

Jewel (je)

38.

What is the energy of moving objects, or the energy of moving parts of a machine?

a)

electrical energy

b)

solar energy

c)

mechanical energy

d)

potential energy

39.

What is the energy something has because of its position? (stored energy)

a)

electrical energy

b)

solar energy

c)

mechanical energy

d)

potential energy

40.
What is the ability to do work or cause change?
a)
reflect
b)
energy
c)
refract
d)
absorb
41.

Which of the following is an example of kinetic energy?

a)

A rock at the top of a hill.

b)

Water falling down a waterfall.

c)

A pencil sitting on a desk.

d)

A backpack on the ground.

42.

Energy that comes from changes in the nucleus of an atom

a)

thermal

b)

mechanical

c)

electric

d)

nuclear

43.

The energy stored in a bow right before you release the arrow is called ______________________________

a)

gravitational potential energy

b)

elastic potential energy

c)

chemical energy

d)

kinetic energy

44.

energy of motion

a)

kinetic

b)

potential

c)

mechanical

d)

electromagnetic

45.
Hot coffee is stirred with a spoon; the spoon gets hot due to
a)
conduction
b)
convection
c)
radiation
46.
A chair is several feet from a fireplace. The side of the chair facing the fireplace gets warm due to
a)
conduction
b)
convection
c)
radiation
47.
"Lava lamps" contain colored liquids. These liquids form globs that rise to the top due to
a)
conduction
b)
convection
c)
radiation
48.
Near the ceiling of a room the air is warmer; the warm air rises because of
a)
conduction
b)
convection
c)
radiation
49.
Some cook pans have cooper on the bottom to heat evenly.
Copper transfers heat to the pan by
a)
conduction
b)
convection
c)
radiation
50.
In a swimming pool, water near the surface is slightly warmer. The warm water rises because of
a)
conduction
b)
convection
c)
radiation
51.
The metal skewer gets so hot that you drop your marshmallow into the campfire because of
a)
conduction
b)
convection
c)
radiation
52.
Warm air over the beach rises while cooler, dense air from the ocean rushes in due to
a)
conduction
b)
convection
c)
radiation
53.
A huge rock at the state park gets hot during the day. The rock was warmed from the Sun by
a)
conduction
b)
convection
c)
radiation
54.

How does heat move?

a)

from a warmer to a cooler object

b)

from a cooler to a warmer object

c)

toward a hot object

d)

away from a cold object

55.

__________ is the transfer of heat by the movement of a fluid.

a)

Conduction

b)

Convection

c)

Radiation

56.

When you touch hot sand, heat is transferred by _________ to your skin.

a)

conduction

b)

convection

c)

radiation

57.
Transfer of energy between solids by direct contact is:
a)
Conduction
b)
Convection
c)
Radiation
58.
The sun shines down on this family as the play on the beach.
a)
conduction
b)
convection
c)
radiation
59.
The candle will slowly heat the metal and transfer the heat directly to the mans hand.
a)
conduction
b)
convection
c)
radiation
60.
The warm air from this heater creates a current when the warm air rises and the cold air sinks.
a)
conduction
b)
convection
c)
radiation
61.

A huge rock at the state park gets hot during the day. The rock was warmed from the Sun by

a)

conduction

b)

convection

c)

radiation

62.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
63.

What type of heat transfer takes place when you touch a warm mug of hot chocolate?

a)

Radiation

b)

Convection

c)

Conduction

d)

None of the above

64.

Which of the following is not a method for heat transfer

a)

Radiation

b)

Insulation

c)

Conduction

d)

Convection

65.
What is the definition of CONVECTION
a)
When heat transfers through waves.
b)
When heat transfers from objects that are touching.
c)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
d)
Heat traveling from the sun
66.
Which of the following is an example of convection?
a)
A hair dryer is drying up your hair.
b)
When the AC or heater changes the temperature.
c)
When a car engine turns hot after being turned on.
d)
When you are making soup and the water is rising and lowering.
67.
In an ocean, warm water moves __________ and cold water moves ____________.
a)
Down, Up
b)
Up, Down
68.
During convection, more dense currents _________ and less dense currents _________.
a)
sink, rise
b)
rise, sink
69.
In convection, WARM air
a)
Rises
b)
Sinks
70.
In convection, COOL air
a)
Rises
b)
Sinks
71.
Warm air is __________ dense than cold air and rises creating convection currents.
a)
more
b)
less
72.

Total energy = 200J
Useful energy = 20J

Workout the efficiency of this lightbulb.
efficiency = useful enegytotal energy in ×100efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100  

a)

100%

b)

80%

c)

40%

d)

10%

73.

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level.

a)

250,000 J

b)

2,450,000 J

c)

2,451,663 J

d)

248 J

74.

Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs?

a)

8.5 J

b)

45 J

c)

7.5 J

d)

22.5 J

75.

Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball?

a)

567 J

b)

900 J

c)

945 J

d)

30 J

76.

Ty lifts a set of 1250kg weights a vertical distance of 2m in a weight lifting contest. What Potential Energy do the weights now possess?

a)

12,789 Joules

b)

24,500 Joules

c)

4,500 Joules

77.
a)
W
b)
X
c)
Y
d)
Z
78.
Which point has the most potential energy?
a)
G
b)
f
c)
b
d)
a
79.

A 5 Kg cart is moving at 10m/s. What is the Kinetic energy of the cart?

a)

250J

b)

220J

c)

520J

d)

500J

80.

What is the mass of a ball that has a kinetic energy of 115 J and is traveling at 9 m/s?

a)

1035 kg

b)

23.5 kg

c)

12.8 kg

d)

2.84 kg

81.

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

a)

71 kg

b)

22.72 kg

c)

142 kg

d)

2.32 kg

82.

When a roller coaster is at the top of a hill it has

a)

high potential energy

b)

high kinetic energy

c)

low potential energy

d)

equal amounts of kinetic and potential energy

83.

Potential energy depends on

a)

mass and height

b)

height and speed

c)

mass and speed

d)

height and force

84.

Kinetic energy depends on

a)

mass and height

b)

height and speed

c)

mass and speed

d)

mass and force

85.

The amount of force required to move an object is called

a)

mechanical energy

b)

work

c)

kinetic energy

d)

potential energy

86.

Energy and work are measured in

a)

kilograms

b)

meters

c)

Joules

d)

m/s

87.

I released a balloon that was full of air and it is flying around the room, the balloon has

a)

kinetic energy

b)

potential energy

88.

A 250 kg island is floating 20 meters in the air. How much potential energy does the island have?

a)

49,000 J

b)

5,000 J

c)

0.98 J

d)

509.68 J

89.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

90.

What is potential energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

non renewable energy

91.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

92.

What is NOT a renewable energy source?

a)

coal

b)

wind

c)

solar

d)

water

93.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
94.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
95.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
96.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
97.

This panda is 832 kg and is 0.31m off the ground. How much gravitational potential energy have they got?

a)

1341.9 J

b)

268387 J

c)

2527.61 J

d)

1263.80 J

98.

How much gravitational potential energy has Nathan got 4 m off the ground with a weight of 50kg.

a)

152 J

b)

980 J

c)

3920 J

d)

1960 J

99.

Bob (45 kg) is moving at 55 ms-1 Calculate the kinetic energy that bob has.

a)

2475 J

b)

1237.5 J

c)

68062.5 J

d)

136125 J

100.

Calculate Kevin's Kinetic energy when jogging at 2.9 ms-1 with a mass of 37 kg.

a)

1073 J

b)

3.11.17 J

c)

155.585 J

d)

15558.5 J

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