Sound waves with Properties

The number of wavelengths that pass a point each second

• frequency
• wavelength
• pitch
• amplitude

Material (matter) through which a wave travels

• medium
• Doppler Effect
• sound
• pitch

Tags

NGSS.MS-PS4-2

How high or low a sound is; depends on the frequency

• pitch

• frequency

• sound

• medium

When the sound source moves, the frequency changes. Which is a correct example?

• A police car siren sounding lower pitched after the car passes you.

• A police car siren sounding louder after the car passes you.

• A police car siren sounding higher pitched after the car passes you.

• A police car siren sounding quieter after the car passes.

A soft sound has a _________ amplitude and a loud sound has a _____________ amplitude.

• large, small

• small, large

Tags

NGSS.MS-PS4-1

Sound spreads out as it travels away from the source. The further away you are from the source, the quieter it sounds. This is due to:

• intensity

• a change in frequency

• a change in amplitude

• the Doppler effect

Tags

NGSS.MS-PS4-1

A low frequency sound will have a ____________ wavelength.

• long

• short

Tags

NGSS.MS-PS4-1

The volume of a sound (how loud it is) depends on the wave's

• Frequency

• Amplitude

• Wavelength

Tags

NGSS.MS-PS4-1

If someone has a very deep voice, the sound waves they produce when talking would have a low frequency.

• True

• False

As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is is called:

• resonance.

• shock waves.

• the Doppler effect.

• echolocation.