Wave Practice

What letter represents the amplitude of the wave in the diagram?

• W

• X

• Y

• Z

Answer explanation

Amplitude is rest to crest

Tags

NGSS.MS-PS4-1

Which number should you label as the amplitude of the wave?

• 1

• 2

• 3

• 4

Answer explanation

Amplitude is distance from rest to trough (or crest)

Tags

NGSS.MS-PS4-1

Which part of a sound wave measures loudness?

• Wavelength

• Magnitude

• Amplitude

• Frequency

Answer explanation

Loudness = Amplitude

Pitch = Frequency

Tags

NGSS.MS-PS4-1

Which statement correctly describes how a sound wave travels through air?

• The wave moves the molecules of air away from the source of the sound.

• The wave transfers energy that causes the air molecules to vibrate back and forth.

• The wave moves an air molecule in one direction until it collides with another molecule.

• The wave moves through the air and gains energy from the moving molecules that it touches.

Answer explanation

Waves move energy, not matter!

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The frequency of a wave is measured in

• hertz

• meters

• hertz/second.

• meters/second

Answer explanation

Frequency hertz!

Tags

NGSS.HS-PS4-1

Which bar measures the wavelength of the wave?

• Bar W

• Bar X

• Bar Y

• Bar Z

Answer explanation

wavelength = trough to trough (two points that are the same)

Tags

NGSS.HS-PS4-1

How can the wavelength be determined?

• By comparing the width of the bands at X and at Y

• By comparing the number of particles at X and at Y

• By measuring the distance between two points labeled X

• By measuring the distance between a point labeled X and a point labeled Y

Answer explanation

wavelength = distance between two points that are same

Tags

NGSS.HS-PS4-1

Which wave has the highest frequency?

• Wave A

• Wave B

• Wave C

• Wave D

Answer explanation

To determine highest frequency, count the crests

Tags

NGSS.MS-PS4-1

Which zone shows waves with the longest wavelength?

• Zone 1

• Zone 2

• Zone 3

• Zone 4

Answer explanation

longest wavelength = greatest distance between crests

For the wave shown, K is the

• Amplitude

• Frequency

• Speed

• Wavelength

Answer explanation

The height from rest to crest = amplitude

Tags

NGSS.MS-PS4-1