Science | Chapter 7

How are sounds made?

• when objects vibrate

• when objects stay

• when objects collide

What is one example of making sounds?

• hitting car

• tuning fork

• flying bird

Can we hear sounds in water?

• Yes, we can

• No, we cannot

How does sound travel in water?

• four times slower

• four times faster

• the same

Why can you hear a sound on wooden table?

• the vibrations travel through your ear

• the vibrations stay

• the vibrations disappear

What can a sound travel through?

• solids

• liquids

• gases

• lights

Why does sounds have different pitches? because of ...

• high notes

• low notes

• high notes and low notes

What does pitch depend on?

• the speed of the vibrations

• the length of the vibrations

• the size of the vibrations

What happens when an object vibrates quickly?

• hearing a low-pitched

• hearing a high-pitched

• hearing no sounds

What happens when an object vibrates slowly?

• hearing a low-pitched

• hearing a high-pitched

• hearing no sounds