Sound and Waves

The ____________________ is the number of vibrations that occur in a 1-second time interval.

• amplitude

• frequency

• period

A wave that causes the particles of the medium to vibrate perpendicularly to the direction the wave travels is called a(n) ____________________.

• transverse wave

• longitudinal wave

• circular wave

• heat wave

Tags

NGSS.MS-PS4-1

A sound wave that is 0.66 meters long and has a frequency of 520 Hz moves with a speed of ___________. (speed = frequency x wavelength )

• 250 m/s

• 434 m/s

• 343 m/s

• 460 m/s

Tags

NGSS.HS-PS4-1

A sound wave that is 1.2 meters long and has a frequency of 284 Hz moves with a speed of ___________. (v = f λ )

• 343 m/s

• 434 m/s

• 520 m/s

• 280 m/s

Tags

NGSS.HS-PS4-1

Sound travels fastest in

• solids

• liquids

• gases

Tags

NGSS.MS-PS4-2

According to the Doppler effect, the dot is

• moving to the left.

• moving to the right.

• not moving.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The area where the waves are closer together represents

• higher frequency

• lower frequency

• the same frequency

Tags

NGSS.MS-PS4-1

Resonance refers to an effect in which the

• vibration of one object causes another object to vibrate at natural frequencies.

• intensity of a sound decreases over time

• pitch of a note is compared to a pure tone.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sound waves are produced by

• radio stations.

• vibrating objects.

• soft objects.

• objects under pressure.

Sound waves cannot travel in

• steel.

• air.

• a vacuum.

• water.

Tags

NGSS.MS-PS4-2