Grade 3 Sound

Sound travels in...

• solid only

• gas only

• liquid only

• solid, liquid and gas

The frog croaks at night. Name the sound source.

True or false? The rice moves less when there is lesser vibration.

True or false? A fighter jet is an example of a soft sound.

Which from the following sounds the loudest?

• a guitar

• a lion roaring

• thunder

We measure sound in units called...

True or false? A 90 decibel sound will damage our ears.

What equipment or apparatus can we use to measure the volume of a sound?

True or false? Sound travels best through solids.

True or false? A whisper is a loud sound.