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Energy mega quiz

Total questions: 102

Worksheet time: 34mins

Name
Class
Date
1.

An oven uses 400 J of electricity to produce 300 J of heat. How efficient is it?

a)

133 %

b)

75 %

c)

300 %

d)

.75 %

2.

A blender uses 1000 J of energy to spin it's blades and make smoothies. What is the input energy?

a)

Electrical

b)

Sound

c)

Heat

d)

Mechanical

3.

A blender uses 1000 J of energy to spin it's blades and make smoothies. What is the useful output energy?

a)

Electrical

b)

Sound

c)

Heat

d)

Mechanical

4.

A car uses 100 J of gasoline. 83 J are turned into mechanical energy. How much should be turned into heat?

a)

7 J

b)

17 J

c)

83 J

d)

100 J

5.

A car uses 100 J of gasoline. 74 J are turned into mechanical energy. 26 J are transformed into heat. What is the car's efficiency?

a)

74%

b)

26%

c)

.26 %

d)

.74%

6.

What is the equation for energy efficiency?

a)

inputuseful out × 100\frac{input}{useful\ out}\ \times\ 100

b)

useful outputinput× 100\frac{useful\ output}{input}\times\ 100

c)

useful outinput\frac{useful\ out}{input}

d)

wastefulinput ×100\frac{wasteful}{input\ }\times100

7.

What does this equation mean?  useful outputinput × 100% \frac{useful\ output}{input}\ \times\ 100\%\  

a)

Efficiency is the fraction of output energy that is useful, compared to how much energy you put in.

b)

Nothing, it's just math. 

c)

Efficiency compares what useful energy you get out to how much you have to put in.

d)

Efficiency compares how much you put in to how much you get out, whether it is the type you want or not.

8.

An oven uses energy to produce heat, light, and sound. If it produces 400 J of heat, 75 J of light, and 50 J of sound, how much input energy did it have?

a)

400 J

b)

500 J

c)

525 J

d)

375 J

9.

Total energy in has to equal

a)

Total energy out (wasteful + useful)

b)

Useful energy out

c)

Useful out - wasteful

10.

A TV uses 200 J of electricity and transforms it into 125 J of sound and light and 75 J of heat. How efficient is it?

a)

62.5%

b)

.625%

c)

37.5%

d)

.375%

11.

My dog likes to run and bark. If he eats 1000 J of food, and transforms that into 700 J of kinetic energy, 100 J of sound, and 200 J of heat, what is his efficiency?

a)

80%

b)

70%

c)

20%

12.

A refrigerator uses 500 J of electricity to remove 350 J of heat from its interior. What is its efficiency?

a)

70%

b)

140%

c)

30%

d)

350%

13.

A light bulb uses 60 J of electrical energy and emits 15 J of light energy. What is the efficiency of the light bulb?

a)

25%

b)

75%

c)

15%

d)

60%

14.

A machine uses 800 J of energy to perform 600 J of useful work. How efficient is the machine?

a)

75%

b)

125%

c)

80%

d)

60%

15.

What is the scientific definition of energy?

a)

The ability to create matter

b)

The capacity to do work

c)

The force exerted by an object

d)

The speed at which an object moves

16.

In which unit is energy measured?

a)

Watts

b)

Newtons

c)

Joules

d)

Metres

17.

What is the symbol for Joules?

a)

J

b)

K

c)

N

d)

W

18.

Which of the following is a type of kinetic energy?

a)

Gravitational Potential Energy

b)

Chemical Energy

c)

Thermal Energy

d)

Nuclear Energy

19.

Which of the following is a type of potential energy?

a)

Light Energy

b)

Sound Energy

c)

Elastic Potential Energy

d)

Electromagnetic Energy

20.

What type of energy is associated with an object in motion?

a)

Potential Energy

b)

Kinetic Energy

c)

Chemical Energy

d)

Nuclear Energy

21.

Which type of energy is stored and has the ability to do work?

a)

Kinetic Energy

b)

Thermal Energy

c)

Potential Energy

d)

Light Energy

22.

Which of the following is an example of kinetic energy?

a)

A stretched rubber band

b)

A moving car

c)

A battery

d)

A rock at the top of a hill

23.

Which of the following is an example of potential energy?

a)

A rolling ball

b)

A lit candle

c)

A compressed spring

d)

A running person

24.

What type of energy is light energy classified as?

a)

Kinetic Energy

b)

Potential Energy

25.

What type of energy is gravitational potential energy?

a)

Kinetic Energy

b)

Potential Energy

26.

Which of the following is not a form of kinetic energy?

a)

Sound Energy

b)

Electromagnetic Energy

c)

Chemical Energy

d)

Thermal Energy

27.

Which type of energy is associated with the nucleus of an atom?

a)

Kinetic Energy

b)

Nuclear Energy

c)

Thermal Energy

d)

Light Energy

28.

Which of the following is an example of chemical energy?

a)

A moving bicycle

b)

A charged battery

c)

A swinging pendulum

d)

A flowing river

29.

What type of energy is sound energy classified as?

a)

Kinetic Energy

b)

Potential Energy

30.

Which type of energy is involved when a bow is drawn back?

a)

Kinetic Energy

b)

Elastic Potential Energy

c)

Thermal Energy

d)

Sound Energy

31.

What type of energy is involved when water is stored behind a dam?

a)

Kinetic Energy

b)

Gravitational Potential Energy

c)

Chemical Energy

d)

Thermal Energy

32.

What type of energy is stored in a battery?

a)

Kinetic Energy

b)

Chemical Energy

c)

Thermal Energy

d)

Sound Energy

33.

Which of the following is an example of gravitational potential energy?

a)

A book on a shelf

b)

A spinning top

c)

A burning candle

d)

A flying airplane

34.

Which of the following is an example of kinetic energy?

a)

A parked car

b)

A flying bird

c)

A book on a table

d)

A frozen lake

35.

What type of energy is stored in food?

a)

Kinetic Energy

b)

Chemical Energy

c)

Thermal Energy

d)

Sound Energy

36.

Which of the following is not a type of potential energy?

a)

Gravitational Potential Energy

b)

Elastic Potential Energy

c)

Thermal Energy

d)

Chemical Energy

37.
At which point(s) on the roller coaster is the gravitational potential energy at its maximum?
a)
A
b)
B
c)
C
d)
D
38.
At which point(s) on the roller coaster is the kinetic energy at its maximum?
a)
A
b)
B
c)
C
d)
D
39.
The Law of Conservation of Energy states:
a)

Energy can be created or destroyed but not transformed 

b)

Energy cannot be created or destroyed, it can only transform or transfer

c)

Energy can't be created, destroyed, or transformed

40.
According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?
a)
The total amount of energy is conserved
b)
The total amount of energy is less after a reaction
c)
The total amount of energy is more after a reaction
41.
As energy transformations occur within a system, the total energy of the system ___.
a)
increases
b)
decreases
c)
is transferred out of the system
d)
remains constant
42.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
43.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
44.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
45.
As an apple falls off a tree...
a)
Gravitational potential energy decreases and kinetic energy increases
b)
Gravitational potential energy decreases and kinetic energy decreases
c)
Gravitational potential energy increases and kinetic energy decreases
d)
Gravitational potential energy increases and kinetic energy increases
46.
What kind of energy does an object possess when it's resting on top of the hill?
a)
Potential Energy
b)
None
c)
Kinetic Energy
d)
All
47.
When a roller coaster is at the bottom of the hill...
a)
The potential energy is greatest, and kinetic energy is least
b)
The kinetic energy is greatest, and potential energy is least
c)
Kinetic and Potential energy are equal
48.

The Law of Conservation of Energy states that energy is never __________________ or _________________, only transferred.

a)

created, destroyed

b)

created, subtracted

c)

added, subtracted

d)

destroyed, subtracted

49.

Energy that is stored in a system, ready to be used, is called ____________ energy.

a)

Kinetic

b)

Potential

c)

Conserved

d)

Power

50.

Energy in a system that is moving is called _______________ energy.

a)

Kinetic

b)

Potential

c)

Mechanical

d)

Power

51.

According to the ____________________, energy cannot be created or destroyed.

a)

kinetic

b)

law of conservation of energy

c)

energy transformation

d)

potential

52.

The Law of Conservation of Energy states energy cannot be created or destroyed only converted from one form to another.

a)

True

b)

False

53.
The law of conservation of energy means ________________________
a)
Energy CAN be created and destroyed or transformed
b)
Energy can be used up or transformed
c)
Energy CANNOT be created or destroyed, only transformed
d)
Energy cannot be transformed
54.

What is the scientific meaning of energy?

a)

anything that has mass

b)

the ability to cause change

c)

anything that cannot be seen

d)

the property of something to take up space

55.

The law of conservation of energy describes how the amount of total energy can change in a closed system. Which of these statements correctly describes this law?

a)

The amount of kinetic energy in a system is a constant value.

b)

Energy can be converted from one form into another, but it cannot be created or destroyed.

c)

An object can have potential energy or kinetic energy, but not both at the same time.

d)

The amount of energy created when an object moves is equal to the energy destroyed when it stops moving.

56.

Energy is always conserved. It cannot be created or destroyed. It can, however, be transferred between objects or systems, from one form to another. Which of the following is true of the relationship between kinetic and potential energy?

a)

When a system loses kinetic energy, it loses potential energy.

b)

As kinetic energy decreases, potential energy decreases.

c)

When a system gains kinetic energy, it loses potential energy.

d)

As kinetic energy increases, potential energy increases.

57.

Energy can't be _____.

a)

transformed

b)

converted

c)

made or created

d)

harnessed or produced

58.

When a baseball bat makes contact with a baseball, _____________ energy is transferred

a)

Kinetic

b)

Gravitational potential

c)

Elastic potential

d)

Sound

59.

A candle burning is a type of energy transformation. It is chemical energy transformed into _________ and __________ energy.

a)

Light, kinetic

b)

Heat, light

c)

Heat, chemical

d)

Kinetic, solar

60.

An energy transfer is

a)

The changing of energy from one form of energy to another form of energy

b)

The changing of energy from gravitational potential to kinetic

c)

The changing of energy from electrical to any other form

d)

The passing of energy from one object to another object

61.

An energy transformation is

a)

The changing of energy from one form of energy to another form of energy

b)

The changing of energy from gravitational potential to kinetic

c)

The changing of energy from electrical to any other form

d)

The passing of energy from one object to another object

62.

The energy in of a match is:

___________

The energy out of a match is:

Heat, light, sound

a)

Kinetic

b)

Electrical

c)

Chemical potential

d)

Mechanical

63.

The energy transformation that takes place when something burns is

a)

Chemical -> Kinetic

b)

Chemical -> Heat

c)

Electrical -> Heat

d)

Mechanical -> Heat

64.

The energy transformation of a Bunsen Burner is:

Chemical potential -> _______ , ________ , ________

a)

Heat, electrical, light

b)

Heat, kinetic, sound

c)

Heat, light, sound

d)

Heat, light, kinetic

65.

Turning on a flashlight. This transformation is:

a)

Chemical to light

b)
Mechanical to light
c)
Kinetic to light
d)

Light to Kinetic

66.

The change of energy from one form to another.

a)

kinetic energy

b)

energy transformation

c)

system

d)

Law of Conservation of Energy

67.

What type of energy transformation occurs when a battery powers a device?

a)

Chemical to electrical

b)

Electrical to chemical

c)

Mechanical to electrical

d)

Light to chemical

68.

Which of the following is an example of energy transfer?

a)

Heat moving from a hot object to a cold one

b)

Light converting to chemical energy in plants

c)

Sound converting to electrical signals in a microphone

d)

Mechanical energy converting to heat in a car engine

69.

When a wind turbine generates electricity, the energy transformation is:

a)

Kinetic to electrical

b)

Electrical to kinetic

c)

Mechanical to chemical

d)

Solar to electrical

70.

What type of energy transformation occurs in a solar panel?

a)

Light to electrical

b)

Electrical to light

c)

Light to chemical

d)

Light to kinetic

71.

When a car engine runs, the energy transformation is:

a)

Chemical to kinetic

b)

Kinetic to chemical

c)

Electrical to kinetic

d)

Kinetic to electrical

72.

Which of the following is an example of energy transformation in a hydroelectric dam?

a)

Gravitational potential to electrical

b)

Electrical to gravitational potential

c)

Kinetic to chemical

d)

Chemical to kinetic

73.

What type of energy transformation occurs when a toaster is used?

a)

Electrical to thermal

b)

Thermal to electrical

c)

Kinetic to thermal

d)

Chemical to electrical

74.

Which of the following is an example of energy transformation in a solar calculator?

a)

Light to electrical

b)

Electrical to kinetic

c)

Kinetic to light

d)

Chemical to electrical

75.

When a light bulb is turned on, the energy transformation is:

a)

Electrical to light

b)

Light to electrical

c)

Kinetic to light

d)

Chemical to light

76.

What type of energy transformation occurs when a fan is turned on?

a)

Electrical to kinetic

b)

Kinetic to electrical

c)

Electrical to thermal

d)

Thermal to kinetic

77.

Which of the following is an example of energy transformation in a wind-up toy?

a)

Elastic potential to kinetic

b)

Chemical to electrical

c)

Electrical to light

d)

Gravitational potential to kinetic

78.

When you ride a bicycle, which energy transformation happens as you pedal and the bike moves forward?

a)

Elastic energy to light energy

b)

Chemical energy to kinetic energy

c)

Gravitational energy to sound energy

d)

Human energy to solar energy

79.
Which energy transformation best describes what happens in an oven?
a)
Electrical ->Thermal
b)
Electrical -> Radiant
c)
Electrical -> Mechanical
d)
Electrical -> Chemical
80.

Which object shows an energy transformation from electrical to mechanical?

a)
b)
c)
d)
81.

Which of the following converts chemical energy to light energy?

a)
candle
b)
light bulb
c)
coal power plant
d)
nuclear power plant
82.
Which of the following converts chemical energy to electrical energy?
a)
candle
b)
light bulb
c)
coal power plant
d)
nuclear power plant
83.

True or False. Energy cannot be created or destroyed, rather it is transformed from one energy type to another.

a)

True

b)

False

84.

What is this diagram called?

a)

Stankey Diagram

b)

Sankey Diagram

c)

Smelly Diagram

d)

Some sort of Diagram

85.
Where does most of the energy go in this transformation.
a)
Electrical energy
b)
Light
c)
Heat
d)
other
86.
Where does most of the energy go for this transformation.
a)
heat
b)
electrical
c)
light
d)
joules
87.

What type of device might this Sankey be about?

a)

A very efficient LED light bulb

b)

A very inefficient light bulb

c)

A coal power plant

d)

A wind turbine

88.
What might a title be for this sankey?
a)
Electrical energy
b)
Efficient light bulb
c)
25 Joules of heat
d)
Sankey for a good heater.
89.

Which of these equations is correct?

a)

efficiency = useful energy outputtotal energy input×100efficiency\ =\ \frac{useful\ energy\ output}{total\ energy\ input}\times100  

b)

efficiency = total energy transferreduseful energy transferredefficiency\ =\ \frac{total\ energy\ transferred}{useful\ energy\ transferred}  

c)

energy = efficiency ×100%energy\ =\ efficiency\ \times100\%  

d)

efficiency = wasted energy transferredtotal energy tranferredefficiency\ =\ \frac{wasted\ energy\ transferred}{total\ energy\ tranferred}  

90.

Which bulb is the most efficient?

a)

Filament bulb

b)

LED light

c)

CFL lamp

91.

A hairdryer uses 300J of energy to produce 60J of sound energy and 240J of thermal energy. Calculate it's efficiency.

a)

80%

b)

90%

c)

20%

d)

100%

92.

An iPhone charger coverts 75J of electricty in to 50J of charge and 25J of thermal energy. How efficient is the charger?

a)

10%

b)

100%

c)

33%

d)

67%

93.

What is the primary purpose of a Sankey diagram?

a)

To show the flow of energy

b)

To calculate energy efficiency

c)

To measure temperature

d)

To display sound levels

94.

Which of the following is an example of wasted energy in a light bulb?

a)

Light

b)

Heat

c)

Sound

d)

Electricity

95.

How is energy efficiency typically expressed?

a)

As a fraction

b)

As a percentage

c)

As a decimal

d)

As a ratio

96.

What is the main advantage of using a Sankey diagram?

a)

It provides a detailed view of energy costs

b)

It visually represents energy flow and losses

c)

It calculates the exact energy efficiency

d)

It measures the temperature of devices

97.

In a Sankey diagram, what does the width of the arrows typically represent?

a)

The speed of energy transfer

b)

The amount of energy being transferred

c)

The cost of energy

d)

The type of energy

98.

What is the efficiency of this light bulb?

a)

15%

b)

30%

c)

25%

d)

45%

99.

What is the efficiency of this electric car?

a)

50%

b)

40%

c)

76%

d)

80%

100.

What are the wasted energy forms in this transformation?

a)

Electric and Kinetic

b)

Kinetic and Sound

c)

Sound and Heat

d)

Heat and Electirc

101.

In a Sankey diagram, what does a narrow arrow typically indicate?

a)

A small amount of energy

b)

A high energy cost

c)

A fast energy transfer

d)

A type of energy

102.

In a Sankey diagram, what does a wide arrow typically indicate?

a)

A small amount of energy

b)

A large amount of energy

c)

A fast energy transfer

d)

A type of energy

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