Sound is a form of what

Sounds are made when things do what

The speed of sound is faster through materials that have particles that are closer together - true or false

sound energy moves in all directions because the particles move in all directions unless something stops them - true or false

the unit of frequency is called what

Sound waves with a high frequency produce sounds with a

The amplitude refers to what about a sound wave

the loudness of a sound depends on what

louder sounds have more or less energy

louder sounds have bigger or smaller amplitudes

sound waves travel through what before entering the ear

sound waves cause the ear drum to do what

the vibrations are passed onto the what

sounds cause what to vibrate

people who are exposed to loud noises for long periods of time are at risk of what

to avoid loud noise damage people often wear what

unpleasant sound is often called what

he loudness of a sound is measured in

The threshold of hearing is what

soft materials do what

what materials are used for sound proofing

light energy can travel through space (a vacuum) but sound energy cannot - true or false

which travels faster light or sound

light travels at what speed

sound travels at what speed

both light waves and sound waves can be reflected - true or false

when sound waves are reflected we call it what