Sound Waves

A disturbance that travels through a medium as a longitudinal wave

• sound
• wavelength
• pitch
• frequency

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The number of wavelengths that pass a point each second

• frequency
• wavelength
• pitch
• amplitude

Tags

NGSS.HS-PS4-1

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 (greater frequency= higher ______)

• pitch

• frequency

• sound

• medium

When the sound source moves, the frequency changes
ex. police car siren sounding lower pitch after the car passes

• pitch
• frequency
• Doppler Effect
• medium

A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves

• longitudinal wave
• ocean wave
• transverse wave
• mechanical wave

The part of a longitudinal wave where the particles of the medium are close together.

• rarefaction
• compression
• crest
• trough

A part in a longitudinal wave where the particles are spread apart

• compression
• rarefaction
• crest
• trough

Which decibel level is typical of a household vacuum cleaner?

• .00001 dB

• 10 dB

• 70 dB

• 120 dB

A car's horn is producing a sound wave having a constant frequency of 350 Hz. If the car moves toward a stationary observer at constant speed, the frequency of the car's horn detected by this observer may be

• 310 Hz

• 330 Hz

• 350 Hz

• 380 Hz