Physics Unit 11 Review: Sound Waves

Which of these waves would have a higher pitch?

• Low Frequency

• High Frequency

• Frequency does not determine pitch

What happens when you increase the amplitude of a sound?

• It makes the sound travel faster

• It makes the sound louder

• It increases the wavelength of the sound

• It increases the frequency of the sound

True or False: Can sound travel though a vacuum (space)

• True

• False

What type of wave must have a medium to vibrate?

• Mechanical
• Electromagnetic
• Infrared
• Radio

Which of the following is a mechanical wave?

• X-Ray

• Gamma Ray

• Sound

• Light

Frequency is measured in:

• decibels

• Hertz

• meters

• seconds

Higher amplitude of a sound wave equals higher intensity. More intensity means

• greater pitch but wrong vocal notes

• louder sound and more energy released

• quieter sound and more energy released

• nothing because energy does not change

Sound waves cannot travel through which of these?

• paper

• milk

• outer space

• hydrogen

Loudness of waves is measured in ____________.

• Hertz

• Decibels

• Watts

• meters/second

A sound wave travels through water at a speed of 1500m/s for 3.5 seconds. What distance does it travel?

• 750m

• 4 500m

• 428.57m

• 365m