Properties of Waves and Sound

When Arjun strums a guitar string, how do the particles of the string respond?

• 
  They remain at rest as the wave passes

• 
  They travel through the medium with the wave.

• 
  They vibrate in a direction parallel to the direction in which the wave is moving.

  
  

• 
  They vibrate in a direction perpendicular to the direction in which the wave is moving.

  
  

Isla is observing waves at the beach. She notices that the height from the crest of a wave to the calm water level is shown in the diagram above. What is the amplitude of the wave?

• 1cm

• 2 cm

• 4 cm

• 12 cm

Charlotte and Jackson are studying different types of waves in their science class. Which question, represented by X on their diagram, helps to identify the type of wave?

• Do the particles transfer energy?

• Does the wave have an amplitude?

• Does the wave require a medium to travel?

• Do the particles travel perpendicular to the wave?

Evelyn is tuning her guitar and wants to adjust the pitch of a musical note. Which property of the sound wave should she change?

• its length

• its frequency

• its amplitude

• its rest position

Luna and her friends are at the beach observing waves in the ocean. The diagram above represents four waves traveling to the shore. Which wave has the greatest amplitude?

• W

• X

• Y

• Z

James and Evelyn are looking at different wave patterns on a screen. Which wave pattern shows the shortest wavelength?

• W

• X

• Y

• Z

During a science class, Grace is learning about waves. Her teacher shows a diagram of a wave and asks, "Which letter indicates the crest?"

• A

• B

• C

• D

David is playing his guitar and notices that the sound is getting louder. What does the amplitude of the sound wave depend on?

• 
  pitch

• 
  loudness

• 
  frequency

• 
  wavelength

Arjun is observing waves at the beach. He wants to measure the height of a transverse wave from the peak to the midpoint. Which term describes this measurement?

• Amplitude

• Trough

• Period

• Frequency

Answer explanation

This answer is correct. The amplitude of a wave is measured from the peak or the trough to the midpoint

How are wavelength and frequency related?

• If the distance between the crests of the waves increase, the frequency decreases.

  
  

• If the distance between the crests of the waves decrease, the frequency decreases.

• If the speed between the crests of the waves increases, the frequency increases.

• If the speed between the crests of the waves decreases, the frequency increase