science grade 5 term 4 sound atmosphere

Sounds are produced when things are ...

Answer explanation

A vibration is a

quick back and forth movement (or up and down).

the speed of a tuning

fork's vibrations is known

as its

• frequency

• hertz

its frequency,

measured in

• hertz

• celcius

• vibration

The loudness of a sound is called

• volume

• hertz

• frequency

Sounds are louder when

vibrations are bigger.

• true

• false

Sounds are soften when

vibrations are bigger.

• true

• false

the unit we use to

measure sound.

• decibel (Db)

• hertz (hz)

Sounds are made when objects vibrate..

• true

• false

You measure the volume of sound with a loudspeaker.

• true

• false

Soft materials are better than hard materials for muffling sound.

• true

• false