Sound

What does sound travel through?

Solids, Liquids, and Gases

What does sound not travel through?

Vacuum

What causes sound?

Vibrations

What does one complete wavelength

look like?

What does a wave with a low pitch

look like?

What does a wave with a high pitch

look like?

What is the top of a wavelength called?

Crest

What is the bottom of a wavelength

called?

Trough

How do we measure wavelengths?

From Crest to Crest

Why does sound travel faster along a metal

fence than a swimming pool?

The molecules are closer together in a

solid

How is the sound you hear underwater

different from the sound you hear in air?

The sound underwater travels

faster than in the air

What is the number of times a sound vibrates in one second called?

Frequency

What is the highness or lowness of a sound called?

Pitch

What is the relationship between pitch and frequency?

The greater the frequency, the

higher the pitch

What pitch do shorter strings

produce?

High

(they vibrate faster)

What pitch do longer strings

produce?

Low

(they vibrate slower)

What do animals use to help detect

objects?

Echolocation

Why can’t people hear some sounds that animals can?

The pitch is either too high or too low

What device is used to detect objects moving through air or space?

Radar

What type of device is used to locate objects moving underwater?

Sonar