Waves Sound

How does sound travel?

• Sound does not travel.

• Sound travels in transverse waves.

• Sound travels in longitudinal waves.

• Sound travels slow.

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

As air particles are pushed together, they create a region of higher density and pressure in a longitudinal wave. These areas are called:

• Trough

• Compression

• Rarefaction

• Frequency

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NGSS.MS-PS4-1

As air particles become less crowded a region of lower density and pressure is created. This part of a longitudinal wave is called a:

• Crest

• Compression

• Rarefaction

• Frequency

The distance between two consecutive regions of high concentration of air particles (high density and pressure) is the _________ of a sound wave.

• Amplitude

• Frequency

• Speed

• Wavelength

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NGSS.MS-PS4-1

A sound wave has a frequency of 20 kHz and travels at a speed of 340 m/s. Calculate the wavelength of this wave.

• 0.017 m

• 17 m

• ~ 59 m

• ~ 0.059 m

Tags

NGSS.HS-PS4-1

The speed of sound through pure water at 0 °C is 1,400 m/s. A sound wave travelling through this medium has a wavelength of 3.18 m. Calculate the frequency of the wave.

• ~ 0.0023 Hz

• 4,452 Hz

• ~ 440 Hz

• 220 Hz

Tags

NGSS.MS-PS4-1

A sound wave travels through concrete. The frequency of the wave is 1.25 kHz and its wavelength is 4 m. Calculate the speed of sound through concrete.

• 312.5 m/s

• ~ 0.3 m/s

• 5 m/s

• 5,000 m/s

Tags

NGSS.HS-PS4-1

What is the pitch of a sound wave?

• How loud or soft sound is.

• How high or low sound is.

• A material that sound travels through.

• Back and forth movement of the air particles.

What is the volume of a sound wave?

• How loud or soft sound is.

• How high or low sound is.

• A material that sound travels through.

• Back and forth movement of the air particles.

Tags

NGSS.MS-PS4-1

Sound travels fastest through _______ .

• solids

• liquids

• gases

• The speed of sound is the same through all media.

Tags

NGSS.HS-PS4-1