Properties of Sounds Science Grade 4

What do we use our ears for?

• To see music

• To touch sounds

• To hear sounds

• To smell vibrations

What is created when the skin of a drum is tapped, causing the air around the drum to vibrate?

• Electrical signals

• A sound wave

• Music notes

• A light beam

What happens when a sound wave reaches our ears?

• Our eyes begin to vibrate.

• Vibrations are transmitted along the parts of our ears.

• We start to sing

• The sound wave disappears.

What are the vibrations in our ears converted into?

• Music

• Light waves

• Electrical signals

• Air pressure

Where are the electrical signals sent after being converted in our ears?

• To our nose

• To our feet

• To our brain

• To our hands

What does our brain do with the electrical signals it receives from our ears?

• It turns them into colors.

• It interprets them as the sound that we hear.

• It makes us dance.

• It helps us to see better.

What do bats use to "see" their surroundings?

• Light

• Touch

• Sound

• Smell

What does the pitch of a sound refer to?

• How loud or soft a sound is.

• How quickly the sound travels.

• How high or low a sound is.

• The material that produces the sound

What kind of sound is produced when an object vibrates slowly?

• A high-pitched sound

• A loud sound

• A soft sound

• A low-pitched sound

What happens when we ring a bell?

• It vibrates slowly and produces a low-pitched sound.

• It does not vibrate

• It vibrates quickly and produces a high-pitched sound.

• It produces no sound.