Properties of Sound

What is frequency?

• amount of time it takes a wave to travel.
• how much pitch a wave has.
• number of wavelengths that occur in a period of time.
• how large the amplitude of a wave is.

What do sound waves need in order to travel?

• vibrations
• medium
• solids
• someone to make them

Why does sound travel better trough solids and not gases?

• the particles are closer together
• gases don't have particles
• just because

Sound is a kind of energy that moves in ______________

• waves
• space

All sounds are made by ____________________ objects

• still
• vibrating

Sound waves, like waves in a pond, move ______________ in circles from their source.

• inward
• outward

True or False:  Energy does not move in waves.

• True
• False

True or False:  You cannot see sound waves.

• True
• False

The quality of being high or low is a sound's __________________

• loudness
• amplitude
• frequency
• pitch

Waves with a high frequency have a ________________ sound

• high
• soft
• low
• amplitude