Question 1

Which of the following is a source of heat energy?

Accepted Answer

the sun

Answer

a computer

Answer

a television

Answer

a book

Question 2

What happens to ice when heat energy is applied to it?

Accepted Answer

It melts into water

Answer

It turns into steam

Answer

It becomes a solid again

Answer

It freezes more

Question 3

Which of the following is an example of energy transformation?

Accepted Answer

A stove turning electrical energy into heat energy

Answer

A plant growing from sunlight

Answer

A light bulb producing sound

Answer

A fan cooling down an area

Question 4

What safety consideration should you keep in mind when using a stove?

Accepted Answer

Do not leave it unattended while cooking

Answer

Touch the hot surface to test temperature

Answer

Use it only in a bathroom

Answer

Keep flammable objects nearby

Question 5

Which form of energy is produced by a candle?

Accepted Answer

heat energy

Answer

light energy

Answer

mechanical energy

Answer

sound energy

Question 6

What do we call the process when heat energy is used to cook food?

Accepted Answer

cooking

Answer

freezing

Answer

boiling

Answer

melting

Question 7

Which device is commonly used to heat a room?

Accepted Answer

a heater

Answer

a refrigerator

Answer

a fan

Answer

a blender

Question 8

Which of the following is a way to improve energy efficiency at home?

Accepted Answer

Using energy-efficient light bulbs

Answer

Leaving lights on all day

Answer

Keeping windows open in winter

Answer

Using older appliances

Question 9

What is the main source of light and heat energy for our planet?

Accepted Answer

the sun

Answer

electricity

Answer

fire

Answer

the moon

Question 10

What happens to metal when it is heated?

Accepted Answer

It expands

Answer

It shrinks

Answer

It glows in the dark

Answer

It melts into liquid

Question 11

What happens when heat energy is added to ice?

Accepted Answer

it melts into water

Answer

it freezes

Answer

it becomes a gas

Answer

it turns into steam

Question 12

Which of the following is an example of heat energy causing change?

Accepted Answer

cooking food

Answer

playing music

Answer

watching TV

Answer

turning on a light

Question 13

What is one way to improve energy efficiency at home?

Accepted Answer

using energy-efficient light bulbs

Answer

leaving lights on when not needed

Answer

using old appliances

Answer

keeping windows closed in summer

Question 14

Which device is commonly used to generate heat energy in a home?

Accepted Answer

a stove

Answer

a fan

Answer

a refrigerator

Answer

a computer

Question 15

Which of the following is NOT a form of energy?

Accepted Answer

a wooden chair

Answer

heat energy

Answer

light energy

Answer

sound energy

Question 16

What form of energy does a light bulb primarily produce?

Accepted Answer

light energy

Answer

heat energy

Answer

mechanical energy

Answer

sound energy

Question 17

What safety consideration is important when using heat energy sources?

Accepted Answer

keeping flammable materials away from heat sources

Answer

using metal utensils only

Answer

wearing sunglasses indoors

Answer

turning off all lights

Question 18

What type of energy is primarily produced by a campfire?

Accepted Answer

heat energy

Answer

mechanical energy

Answer

nuclear energy

Answer

light energy

Question 19

Which of the following is a common source of sound energy?

Accepted Answer

a musical instrument

Answer

a microwave oven

Answer

a light bulb

Answer

a refrigerator

Question 20

Which of the following forms of energy can we hear?

Accepted Answer

sound energy

Answer

light energy

Answer

heat energy

Answer

nuclear energy

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