Vibrations and Wave Motion

The amount of time it takes for one full cycle of a wave to repeat is the ---.

• frequency

• speed

• amplitude

• period

A wave that requires a medium through which to travel

• mechanical wave
• chemical wave
• electromagnetic wave
• pitch

Suppose sound waves travel at 340 m/s through the air on a particular day. If you throw a Pop-It on the ground and it makes a sound, how long will it take for you to hear the echo off a wall 170 m away?

• 340 s

• 170 s

• 2 s

• 1 s

• 0.5 s

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NGSS.HS-PS4-1

The number of waves that pass a fixed point in a given amount of time is the ---.

• frequency

• speed

• period

• wavelength

Answer explanation

"Cycles per second" or "repetitions per second" is how we think of frequency, and we measure it in hertz (Hz).

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NGSS.HS-PS4-1

Which location represents the amplitude?

• f

• g

• h

• j

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NGSS.MS-PS4-1

A wave traveling at 340. m/s with a wavelength of 7.65 m will have a frequency of _____.

• 44.4 Hz

• 0.0225 Hz

• 2,601 Hz

• none of these

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NGSS.HS-PS4-1

A wave of which the medium moves perpendicular to the direction of the motion of the energy is a _____.

• transverse wave

• longitudinal wave

• seismic wave

• tidal wave

The wavelength of this wave is ___.

• Q

• R

• S

• T

• U

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NGSS.HS-PS4-1

A seismic wave traveling at 2240 m/s with a wavelength of ___ m will have a frequency of 12 Hz.

• 187 m

• 26880 m

• .00536 m

• none of these

• 1120 m

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NGSS.HS-PS4-1

The graph shows the motion of a piece of bark on a pond as a wave passes by it. What is the period of the wave in the pond?

• 3 s

• 3 cm

• 4 s

• 2 s

Tags

NGSS.HS-PS4-1