Quiz about YR 8 SC - Energy Revision Quiz 2

Question 1

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

Accepted Answer

Electrical to light

Answer

Chemical to light

Answer

Electrical to chemical

Answer

Chemical to electrical

Question 2

Which of the following shows an energy transformation from chemical energy to electrical to light energy?

Accepted Answer

A battery causes a flashlight to shine.

Answer

A bolt of lightning lights the night sky.

Answer

A candle glows brightly in the dark.

Answer

A fire in a fireplace lights up a room.

Question 3

What energy transformations take place when a battery-operated radio is in use?

Accepted Answer

Chemical to electrical to sound

Answer

Electrical to chemical to light

Answer

Sound to chemical to mechanical

Answer

Light to electrical to thermal

Question 4

Which of the following devices transforms electrical energy into mechanical energy?

Accepted Answer

a fan

Answer

An e-reader

Answer

a manual pencil sharpener

Answer

ipod

Question 5

What best describes the energy conversion that occurs when you turn on a hair dryer?

Accepted Answer

electric to kinetic to thermal and sound

Answer

chemical to thermal to light and sound

Answer

nuclear to electrical to thermal and sound

Answer

kinetic to light to thermal and sound

Question 6

In energy transformations, "wasted energy" usually takes what form?

Accepted Answer

heat

Answer

chemical energy

Answer

light

Answer

sound waves

Question 7

Which is an example of radiant energy to thermal energy transformation?

Accepted Answer

a greenhouse

Answer

an electric stovetop

Answer

an electric stove

Answer

a car's brakes

Question 8

What two forms of energy are given off by a burning candle?

Accepted Answer

heat and light

Answer

mechanical and electrical

Answer

nuclear and light

Answer

potential and heat

Question 9

What is the best example of a device that converts electrical energy to light and sound?

Accepted Answer

a clock radio

Answer

a toaster

Answer

a flashlight

Answer

an electric toothbrush

Question 10

Which of the following mechanical energy to electrical energy?

Accepted Answer

windmill

Answer

solar calculator

Answer

glow stick

Answer

firecracker

Question 11

Which of the following chemical energy to radiant energy?

Accepted Answer

glow stick

Answer

solar calculator

Answer

windmill

Answer

firecracker

Question 12

Which of the following converts chemical energy to radiant energy?

Accepted Answer

candle

Answer

light bulb

Answer

coal power plant

Answer

nuclear power plant

Question 13

Which of the following converts nuclear energy to electrical energy?

Accepted Answer

nuclear power plant

Answer

candle

Answer

light bulb

Answer

coal power plant

Question 14

Which of the following converts chemical energy to mechanical energy?

Accepted Answer

Automobile

Answer

Battery

Answer

Person riding a bike

Answer

Camp Fire

Question 15

According to the Law of Conservation of Energy, energy cannot be _________ or ____________.

Accepted Answer

created, destroyed

Answer

destroyed, destroyed

Answer

created, saved

Answer

lost, found

Question 16

What is energy changing from one form to another?

Accepted Answer

energy transformation

Answer

energy conservation

Answer

energy creation

Answer

mechanical energy

Question 17

Mechanical Energy is transferred to _____ Energy.

Accepted Answer

Electrical

Answer

Solar

Answer

Mechanical

Answer

Potential

Question 18

Electrical Energy is transferred to _____ Energy.

Accepted Answer

Thermal

Answer

Solar

Answer

Electrical

Answer

None

Question 19

Solar Energy is transferred to _____ Energy.

Accepted Answer

Electrical

Answer

Mechanical

Answer

Solar

Answer

Sound

Question 20

Energy you get from eating an apple

Accepted Answer

chemical energy

Answer

nuclear energy

Answer

electromagnetic energy

Answer

sound energy

Question 21

Energy of motion is which type of energy?

Accepted Answer

Kinetic

Answer

Potential

Answer

Sound

Answer

Gravitational

Question 22

What kind of energy is represented in this picture?

Accepted Answer

Thermal

Answer

Potential

Answer

Nuclear

Answer

Mechanical

Question 23

On a roller coaster, where is maximum potential energy?

Accepted Answer

At the top of a big hill

Answer

At the bottom of a big hill

Answer

When going around a corner

Answer

When going upside down

Question 24

On a roller coaster, where is maximum kinetic energy?

Accepted Answer

At the bottom of a big hill

Answer

When going around a corner

Answer

When going upside down

Answer

At the top of a big hill

Question 25

Energy that comes from the nucleus of an atom. A form of potential energy.

Accepted Answer

Nuclear energy

Answer

chemical energy

Answer

Sound energy

Answer

Electrical energy

Question 26

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

Accepted Answer

firecracker

Answer

blender

Answer

lightbulb

Answer

apple

Question 27

Which of the following shows an energy transformation from chemical energy to electrical to radiant energy?

Accepted Answer

A battery causes a flashlight to shine.

Answer

A bolt of lightning lights the night sky.

Answer

A candle glows brightly in the dark.

Answer

A fire in a fireplace lights up a room.

Question 28

The unit of measure for energy is...

Accepted Answer

Joules

Answer

Meters

Answer

Newtons

Answer

Gravity

Question 29

Electrical energy can be kinetic or potential.

Accepted Answer

True

Answer

False

Question 30

At which point is kinetic energy greatest?

Accepted Answer

X

Answer

W

Answer

Y

Answer

Z

Question 31

When a pendulum swings, at which point is potential energy at its greatest?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 32

A student listens to music with a digital music player, similar to the one shown below. Which best describes the energy transformations that take place in the music player?

Accepted Answer

Chemical to electrical to sound

Answer

Mechanical to chemical to electrical

Answer

Chemical to sound to electrical

Answer

Electrical to heat to sound

Question 33

Where does most of the energy go in this transformation.

Accepted Answer

Heat

Answer

Electrical energy

Answer

Light

Answer

other

Question 34

Where does most of the energy go for this transformation.

Accepted Answer

light

Answer

heat

Answer

electrical

Answer

joules

Question 35

Which fraction best describes, of the part of the gasoline that is put into a car, that actually makes the car move.

Accepted Answer

1/4

Answer

4/10

Answer

2/4

Answer

3/5

Question 36

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

Accepted Answer

80%

Answer

90%

Answer

20%

Answer

100%

Question 37

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

Accepted Answer

50%

Answer

5%

Answer

55%

Answer

100%

Question 38

Heat energy is also called ______ energy.

Accepted Answer

thermal

Answer

chemical

Answer

electrical

Answer

mechanical

Question 39

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

Accepted Answer

67%

Answer

10%

Answer

100%

Answer

33%

Question 40

What form of energy is being used when a person pushes heavy boxes across the floor?

Accepted Answer

Mechanical energy

Answer

Electrical energy

Answer

Heat energy

Answer

Sound energy

Question 41

Another word for Light Energy is ...

Accepted Answer

Radiant Energy

Answer

Real Energy

Answer

Radar Energy

Answer

Rational Energy

Question 42

Look at the picture below.  Which part of the lamp system could be removed and the lamp still work?

Accepted Answer

The lamp shade

Answer

The electrical cord

Answer

The light bulb

Answer

The wall outlet

Question 43

Stored energy

Accepted Answer

Potential Energy

Answer

Thermal Energy

Answer

Stored Mechanical Energy

Answer

Kinetic Energy

Question 44

Compressed springs and stretched rubber bands are examples.

Accepted Answer

Stored Mechanical Energy

Answer

Potential Energy

Answer

Radiant Energy

Answer

Kinetic Energy

Question 45

Electromagnetic energy that travels in transverse waves.

Accepted Answer

Radiant Energy

Answer

Sound Energy

Answer

Thermal Energy

Answer

Gravitational Energy

Question 46

Wind and hydropower are examples.

Accepted Answer

Mechanical Energy

Answer

Chemical Energy

Answer

Gravitational Energy

Answer

Sound Energy

Question 47

Movement of a substance from one place to another.

Accepted Answer

Mechanical Energy

Answer

Chemical Energy

Answer

Gravitational Energy

Answer

Sound Energy

Question 48

Which of the following is NOT mechanical energy?

Accepted Answer

Turning on a light bulb

Answer

Pedaling a bike

Answer

Rowing a boat

Answer

Running up a hill

Question 49

Heat is another name for-

Accepted Answer

thermal energy

Answer

magnetic energy

Answer

electrical energy

Answer

mechanical energy

YR 8 SC - Energy Revision Quiz 2

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