Sound Bill Nye

Sound is ____________ or _______________ of air.

• loud, soft

• movements, vibrations

• frequency, stillness

• cloudy, foggy

Tags

NGSS.MS-PS4-1

Each ear has a ______ to focus sound.

• cup

• bowl

• lobe

• earring

Submarines translate sound waves into _______________.

• ocean waves

• pictures

• clouds

• air

A slinky is a perfect way to show how sound ____________.

• sounds

• grows

• travels

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

An echo is a sound that has been bounced back, or ____________.

• reflected

• refracted

• disappeared

• repeated

Tags

NGSS.MS-PS4-2

Sound waves make your ear drum ______________.

• silent

• stuffed

• explode

• vibrate

Increased frequency (more waves per second) results in a ___________ pitch.

• lower

• higher

• softer

• louder

Decreased frequency (fewer waves per second) results in a ___________ pitch.

• lower

• higher

• louder

• softer

Why do sound waves need air?

• To breathe.

• It is the medium it travels through.

• They actually don't need air.

• Because air likes to surf.

Tags

NGSS.MS-PS4-2

Sound waves above 20,000 frequency are called __________.

• infrasonic

• supersonic

• ultrasonic

• Sonic the hedgehog