Sound Waves Quiz

What is number 6 showing in the diagram?

• Amplitude
• Crest
• Node
• Trough
• Wave

What is number 5 showing in the diagram?

• Amplitude
• Crest
• Node
• Trough
• Wave

Select all that apply. Sound waves:

• Require a medium to travel through.

• Have a repeating or back-and-forth pattern of motion.

• Transfer energy.

• Have a non-repeating pattern of motion.

What is a medium through which sound travels? (Select all that apply.)

• Vacuum

• Liquid

• Gas

• Solid

A student measures the frequency of a wave as 2 waves/second. How many waves would they expect in 10 seconds? (Choose the one best answer.)

• 10 waves

• 20 waves

• 40 waves

• 80 waves

If a harpist wants to play a quieter sound, what should she do?

• Decrease the frequency.

• Pluck the string harder.

• Increase the amplitude.

• Pluck the string more gently.

A student taps a drum, and you hear a noise. Which of the following describes how a sound wave is made when the student taps the drum? (Select all that apply.)

• The drum vibrates and pushes air particles.

• The drum makes a noise that instantly reaches the ear of a listener.

• The particles are pushed perpendicular to the direction of the wave, creating a transverse wave.

• The particles are pushed away in a repeating pattern, creating a compression wave.

The student increases the amplitude of the drum noise. True or false? The student applies less force on the drum.

• True

• False

The student increases the amplitude of the drum noise. True or false? The sound wave will transfer more energy.

• True

• False

The student increases the amplitude of the drum noise. True or false? The sound will be louder.

• True

• False