Sound

Which thing gives out loud sound?

• Fan

• Clock

• Bird chirping

• Drill

Which thing gives out soft sound?

• Gong

• Air conditioner

• Bus

• Fire alarm

You will hurt your ears if you listen to a very ___ music.

• low

• soft

• loud

• mute

Sound travels in ___

• solid

• liquid

• gas

• all correct

Sound travels fastest in ___

• metal

• empty space

• air

• water

Sound is caused by ___

• instrument

• vibration

• force

• wind

A place where no sound exists is ___

• in the pool

• in the air

• in the space

• under water

When we speak, our ___ vibrate.

• tongue

• ear

• eardrum

• vocal chords

What do bats and dolphins use to find things?

• Echolocation

• Light

• Eyes

• Wave

To make a sound from a stringed instrument louder you must ___

• hit it

• pluck it harder

• hold it higher

• pluck it softer