Stage 4 - Unit 4.4 - Sounds

Sound is a …..

• type of energy.

• type of forest.

• type of music.

Sound needs ….

• particles/ atoms to travel.

• wing to travel.

• light to travel.

A sound source makes particles/atoms ……..

• vibrate

• fly

• melt

• freeze

The vibration travels to your ….. where the vibration becomes the sound you …….

• ear - hear

• nose - smell

• eyes - see

Sound travels at …………. speeds in ……….. materials.

• different - same

• same - same

• different - different

• same - different

In gases, sound travels ……

• slow

• fast

• very fast

In liquids, sound travels ……

• slow

• fast

• very fast

In solids, sound travels ……

• slow

• fast

• very fast

Sound cannot travel in …..……. (areas with no particles). Like space. You cannot hear sound in space.

• a vacuum

• the air

• the water

Sound speeds up the ……. the particles.

• closer

• further

• slower