Exercise 4.3 HOW SOUND TRAVELS

When you tap the bowl as shown in the picture, it makes the rice gains ___________

• vibration

• vibrate

• more

• less

As you tap the bowl with a spoon, ______________travel through the bowl and plastic wrap to the rice.

• vibrations

• more

• less

• vibrate

The rice grain moves ________________when you tap the bowl gently.

• vibration

• more

• less

• vibrate

The rice grain moves ________________when you tap the bowl hard.

• vibration

• more

• less

• vibrate

Sound travels the loudest through..........?

• solids

• liquid

• gas

Vibrations produce sound. True or False?

• True

• False

A vacuum is a space without any material or an empty space without any matter. Can sound travel through a vacuum?

• Yes, sound can travel through a vacuum.

• No, sound can't travel through a vacuum.

• Maybe, sound can travel through a vacuum.

Guitar strings can produce sound because they ___________

• tap the wood of the guitar repeatedly

• vibrate repeatedly

• swing repeatedly

• are strummed repeatedly