Waves Sound

What is the Doppler Effect?

• A change in frequency due to the relative motion of a wave source and an observer

• When a wave overlaps with another wave

• When a wave bounces off of another object

• When a wave bends due to traveling through a different medium

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

travels through solids fastest because the molecules are closer together

• speed of sound

• wavelength

• frequency

• amplitude

How high or low a sound is; depends on the frequency (greater frequency= higher pitch)

• pitch

• frequency

• sound

• medium

A reflected sound wave

• frequency

• pitch

• echo

• rarefaction

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NGSS.MS-PS4-2

Which feature of sound is determined by amplitude?

• Pitch

• Smoothness

• Loudness

Tags

NGSS.MS-PS4-1

What is changed in the second picture?

• Someone is talking louder in picture 2

• Someone is talking softer in picture 2

• Someone is talking lower pitch in picture 2

• Someone is talking higher pitch in picture 2

Tags

NGSS.MS-PS4-1

What is changed in the second picture?

• Someone is talking louder in picture 2

• Someone is talking softer in picture 2

• Someone is talking lower pitch in picture 2

• Someone is talking higher pitch in picture 2

Tags

NGSS.MS-PS4-1

In which of these types of media will sound travel fastest?

• Solid

• Liquid

• Gas

Tags

NGSS.MS-PS4-2

Frequency of waves is measured in

• Hertz

• Decibels

• Watts

Tags

NGSS.HS-PS4-1

High frequency sounds have _______ pitch

• HIgh

• Low