Waves and Sound Unit Test Review

Frequency is defined as...

• Number of waves or cycles generated per second.
• The maximum displacement of a wave from its equilibrium position.
• The time interval between two consecutive waves.
• The distance between two identical positions on two consecutive waves.

A wave machine generated waves with a wavelength of 0.080 m at a constant wave speed of 17 m/s. Calculate the frequency of the waves.

• 212 Hz

• 1.36 Hz

• 0.00470 Hz

• 16.92 Hz

• 1.36

The speed of sound in air is 340 m/s. The frequency of the sound waves generated by my voice is 720 Hz. Calculate the wavelength of sound of my voice.

• 380 m

• 0.472 m

• 2.11 m

• 244,800

• none of these are correct

The pitch of a sound is most closely related to the

• frequency  of the sound waves
• distance from the sound source
• medium through which the sound travels
• intensity of the sound

How loud or soft a sound is, is related to the _____________ of the wave

• amplitude
• frequency
• wave length
• rest position

Which wave has the largest wavelength?

• A
• B
• C
• None (same wavelength)

Which wave has the highest frequency?

• A

• B

• C

• None (same frequency)

• none of these are correct

Sound waves are...

• cool
• not cool
• transverse waves
• longitudinal waves

Which type of wave is pictured here?

• Longitudinal
• Transverse
• Light 
• Electromagnetic

Which of the following is a TRUE statement about the diagram illustrating Doppler Effect?

• The observer will hear a lower pitch sound because the waves are closer together

• The observer will hear a louder sound because the waves are closer together

• The observer will hear a higher pitch sound because the waves are closer together

• The observer will hear a softer sound because the waves are closer together