Exploring the World of Sound

What is a sound wave?

• A type of light wave

• A wave that travels through air and other materials

• A wave that can only be seen

• A wave that does not move

What happens to the pitch of a sound if the frequency of the sound wave increases?

• The pitch becomes lower

• The pitch stays the same

• The pitch becomes higher

• The pitch disappears

What is an echo?

• A sound that is absorbed by walls

• A sound that is reflected back to the listener

• A sound that is only heard underwater

• A sound that is made by animals

Which of the following is an example of sound in nature?

• The sound of a car engine

• The sound of a computer

• The sound of birds chirping

• The sound of a television

Which musical instrument uses strings to produce sound?

• Flute

• Drum

• Violin

• Trumpet

What is noise pollution?

• Pleasant sounds that help you relax

• Unwanted or harmful sounds in the environment

• Sounds that are only heard in the countryside

• Sounds that are made by musical instruments

How does the volume of a sound change if you move further away from the source?

• The volume increases

• The volume stays the same

• The volume decreases

• The volume becomes louder

What unit is used to measure the frequency of a sound wave?

• Metres

• Hertz

• Celsius

• Ounces

Which of the following can cause an echo?

• A soft carpet

• A thick curtain

• A hard wall

• A fluffy pillow

What is the main difference between a high-pitched sound and a low-pitched sound?

• High-pitched sounds are quieter

• High-pitched sounds have a higher frequency

• Low-pitched sounds are faster

• Low-pitched sounds have a higher frequency