Describing Sound Waves

What happens to the wave when you increase the frequency?

• The wave becomes taller

• The crests become closer together

• The wavelength becomes longer

• Nothing happens

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NGSS.MS-PS4-1

What is affected when you change wave speed? (Choose all that apply)

• Amplitude

• Frequency

• Wavelength

• Only wave speed is affected

Tags

NGSS.HS-PS4-1

If I wanted to create a wave with the least energy, I would ________ the frequency.

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NGSS.HS-PS4-1

Notice the red dots/particles moving in the simulation. Why are they not carried to the right with the wave's energy?

• The wave is not carrying enough energy to move them

• That is a mistake in the simulation

• They do not want to😠

• Waves do not carry matter, only energy

Match the following

• Crest

• Part A

• Trough

• Part C

• Amplitude

• Part B

• Wavelength

• Part D

Tags

NGSS.MS-PS4-1

A note is played on a flute. Which of the parts of the wave would be affected by playing a higher pitch note and how?

• D, the frequency would get higher.

• C, the wavelength would get shorter.

• C and D, the amplitude and wavelength would increase.

• A, B and D. The amplitude and crest would be higher, while the trough would be lower.

Tags

NGSS.MS-PS4-1

As you tune your radio to a higher frequency, from 88.5 FM to 103.3 FM, the wavelength of the wave that you are tuning in

• 
  increases.

• decreases.

• remains the same.

• 
  randomly changes.

Tags

NGSS.HS-PS4-1

To locate objects in their environments, bats in flight and porpoises under water both use ultrasound waves with frequencies that are beyond human hearing. These animals produce an ultrasonic wave and then detect echoes from nearby objects. If a porpoise and a bat both produce ultrasonic waves when they are are 16 meters from an object, which animal would hear its echo first and why?

• The bat would hear its echo first because the amplitude of sound waves is greater in air than in water.

• The porpoise would hear its echo first because the amplitude of sounds waves is greater in water than in air.

• The bat would hear its echo first because sound travels faster in air than in water.

• The porpoise would hear its echo first because sound travels faster in water then in air.

What do we call the part of a sound wave that is bunched together?

• That thingy?

• Compression

• Trough

• Crest

Tags

NGSS.MS-PS4-1

Which medium does a sound wave travel fastest through?

• Solid

• Liquid

• Gas

• Plasma