Free Printable Energy

1.

A plant turns thermal energy from the sun into chemical energy during photosynthesis. This is an example of a(n)...

a)

Energy transformation

b)

Matter transformation

c)

Energy change

d)

Physical Change

2.

Which of the following is an example of thermal energy?

a)

A light bulb

b)

The movement of a car

c)

The digestion of food

d)

Heat from a fire

3.

Energy from the sun is called...

a)

Conduction

b)

Rays

c)

Radiation

d)

Heat

4.

True or False: Energy can be created.

a)

True

b)

False

5.

Which has more gravitational energy?

a)

A snowboarder at the top of a mountain

b)

A person laying on the beach

6.

Which of the following is NOT a form of energy?

a)

Thermal

b)

Mechanical

c)

Sound

d)

Water

7.

Energy that is stored is called...

a)

Kinetic Energy

b)

Potential Energy

c)

Mechanical Energy

d)

Thermal Energy

8.

Which has the most kinetic energy?

a)

A caught baseball

b)

A turtle swimming

c)

A parked car

9.

On a hot summer day, which shirt would you put on to make sure you stay cool while you are outside playing?

a)

A black shirt because it reflects the sun's energy.

b)

A white shirt because it reflects the sun's energy.

c)

A black shirt because it absorbs the sun's energy.

d)

A white shirt because it absorbs the sun's energy.

10.

What type of energy is in this picture?

a)

Kinetic

b)

Potential

c)

Chemical

d)

Sound

11.

When plants convert the sun's energy into food, which type of energy is it?

a)

kinetic

b)

chemical

c)

thermal

d)

radiant

12.

What kind of energy is represented in this picture?

a)

Thermal

b)

Potential

c)

Nuclear

d)

Mechanical

13.

What kind of energy does this device use?

a)

Chemical

b)

Electrical

c)

Thermal

d)

Chemical

14.

What kind of energy is represented in the picture?

a)

Thermal

b)

Chemical

c)

Sound

d)

Nuclear

15.

A battery converts what type of energy to another?

a)

sound to kinetic

b)

light to heat

c)

mechanical to electrical

d)

chemical to electrical

16.

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

17.

Wind turbines and windmills convert what energy to another?

a)

Kinetic to electric

b)

Gravitational potential to electric

c)

Mechanical to potential

d)

Thermal to sound

18.

What machine changes electrical energy into light and sound energy?

a)

battery

b)

lightbulb

c)

alarm clock

d)

apple

19.

According to which law of energy, energy can't be created or destroyed?

a)

First law of motion

b)

The law of tacos

c)

Laws of Energy

d)

law of conservation of energy

20.

The purpose of the panels is to change solar energy into ____________.

a)

light energy

b)

electrical energy

c)

chemical energy

d)

mechanical energy

21.

What machine changes chemical energy into heat, light and sound energy

a)

blender

b)

firecracker

c)

lightbulb

d)

apple

22.

Which of the following correctly identifies a method of heat transfer that will happen in this situation?

a)

Heat will be transferred from the hot plate to the thermometer through radiation.

b)

Heat will be transferred from the beaker to the thermometer through convection.

c)

Heat will be transferred from the hot plate to the beaker through convection.

d)

Heat will be transferred from the thermometer to the beaker through conduction.

23.

Conduction can only occur between two objects when–

a)

one object is less dense than the other.

b)

both objects are in physical contact with each other.

c)

one of the objects is made of a metal.

d)

both objects are exactly the same temperature.

24.

Which of the following is an example of a situation in which an egg is receiving thermal energy through convection?

a)

Which of the following is an example of a situation in which an egg is receiving thermal energy through convection?

b)

An egg is fried in a metal pan on the stove.

c)

An egg cracked on a hot sidewalk starts to cook.

d)

The egg is cooked in a pot of water on the stove.

25.

Objects that can transfer energy easily.

a)

Conductors

b)

Conduction

c)

Convection

d)

Insulators

26.

Thermal energy is transferred when two objects of different temperatures touch.

a)

Conductors

b)

Conduction

c)

Radiation

d)

Convection

27.

Thermal energy is transferred through space.

a)

Conduction

b)

Radiation

c)

Convection

d)

Temperature

28.

Transfer of energy through circular motion caused by heating and cooling in fluids (liquids and gases).

a)

Conduction

b)

Convection

c)

Radiation

d)

Conductors

29.

Feeling warmth on your hands when you hold them near a campfire is an example of ____________________________.

a)

radiation

b)

conduction

c)

convection

d)

conductors

30.

Thermal energy being moved from one object to another by conduction, convection, or radiation is called _____________________.

a)

fluids

b)

heat transfer

c)

collision of atoms

d)

radiation

31.

The Law of Conservation of Energy states:

a)

Energy can created or destroyed but not transformed

b)

Energy cannot be created or destroyed, it can only transformed

c)

Energy can't be created, destroyed or transformed

d)

Energy cannot be created or destroyed.

32.

Total energy = 200J
Useful energy = 20J

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

a)

100%

b)

80%

c)

40%

d)

10%

33.

To save energy, what should you do when you leave a room ?

a)

USE ELECTRICAL ENERGY

b)

SHUT OFF THE LIGHTS AND TELEVISION

c)

TURN ON THE LIGHTS AND TELEVISION

d)

HANG YOUR CLOTHES OUTSIDE

34.

How can you dry your clothes to save energy?

a)

Use the dryer machine

b)

Don't dry your clothes

c)

Leave the fridge door open

d)

Hang the clothes to dry outside on a line

35.

To increase the EFFICIENCY of energy use, we could...

a)

Turn off lights when not in use

b)

Keep the car running as you go into the store

c)

Water the plants in a drought

36.

Another way to save energy is to...

a)

Conserve it

b)

Waste it

c)

Use it

37.

What is energy conservation?

a)

Adding up all your energy use

b)

Reducing energy use

38.

A washing machine uses 250J of electrical energy to produce 125J of useful energy. How efficient is it?

a)

5%

b)

50%

c)

55%

d)

100%

39.

A kettle uses 100J of electrical energy to produce 7J of sound energy and 93J of thermal energy. How efficient is the kettle?

a)

100%

b)

7%

c)

93%

d)

95%

40.

What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J or work are done by the machine?

a)

0.25 Joules

b)

26%

c)

3.86 Joules

d)

386%

41.

Total energy = 350J
Useful energy = 70J

Workout the efficiency of this iphoneX.
$efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

100%

b)

80%

c)

40%

d)

20%

42.

Total energy = 34000J
Useful energy = 340J

Workout the efficiency of this vintage VW Beetle.
$efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

100%

b)

10%

c)

40%

d)

20%

43.

This car needs 8600J of energy to power it. If 5000J is changed into useful energy, how much energy is wasted?

a)

13600J

b)

3600J

c)

5000J

d)

8600J

44.

A car transfers 100 J of chemical energy in order to gain 50 J of kinetic energy. The efficiency of the car is

a)

20%

b)

0.5%

c)

50%

d)

200%

45.

What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J is produced by the 1machine?

a)

0.25 J

b)

26%

c)

386%

d)

3.86 J

46.

What is the efficiency of the machine if the input is 263 J and the output is 142 J?

a)

6.26%

b)

54%

c)

100%

d)

260%

47.

What is the efficiency of a machine that has work input of 40 joules and work output of 35 joules?

a)

87.50%

b)

1200

c)

1.142

d)

114%

48.

What is the work output of a machine that has a work input of 2,800 Joules and an efficiency of 92.3%?

a)

2,690J

b)

92.3J

c)

0.0082J

d)

2,584.4

49.

What is the useful work output of a machine that consumes 2,800 Joules and an efficiency of 40%?

a)

7000 J

b)

2760 J

c)

1120 J

50.

Mr. Field has been challenged to increase the efficiency of a device he is redesigning. His goal is 90% efficiency. The work input of the device is fixed at 10 joules, so Mr. Field is trying to improve work output. How many joules of work output should Lucas aim for to attain his goal of 90% efficiency?

a)

9 Joules

b)

900 Joules

c)

0.9 Joules

d)

25

51.

What percent energy is wasted by a machine if the energy input is 262 J and the energy output is 131 J?

a)

5%

b)

50%

c)

100 J

52.

What is the work output of a machine that has a work input of 2,800 Joules and an efficiency of 90%?

a)

25200 J

b)

2520 J

c)

0.0082J

53.

A watt is

a)

Joules per coulomb

b)

Joules per second

c)

Coulombs per second

d)

Second per Joule

54.

For a traditional light bulb, which is brighter?

a)

20 W

b)

40 W

c)

60 W

d)

The smartest one

55.

The power of an appliance is...

a)

the amount of voltage going through it

b)

the amount of energy transferred per second

c)

the amount of charge that passes through per second

56.

A lamp changes __________ energy into light energy.

a)

Kinetic

b)

Electrical

c)

Sound

d)

Chemical

57.

A bulb of 100 W means that it will consume electrical energy at the rate of:

a)

100 kJ per second.

b)

100 kJ per hour.

c)

100 joules per second.

d)

100 joules per hour.

58.

Is the amount of energy being transferred over a period of time.

a)

Power

b)

Energy

c)

Seconds

d)

Joules

59.

What is the unit of energy that electrical companies use?

a)

kJ

b)

kW

c)

kJ/hour

d)

kW/hour

Energy

Total questions: 59

Worksheet time: 46mins

Similar Resources on Wayground