8th Chapter 16 Review

True/False Sound waves can travel through matter and empty space.

• True

• False

True/False Sound travels faster in solids than in air.

• True

• False

When a wave travels through a medium _____.

• particles are transferred from one place to another

• energy is transferred in a periodic manner

• energy is transferred at a constant speed

• None of the above statements is applicable.

When sound travels through air, the air particles _____.

• vibrate but not in any fixed direction

• vibrate perpendicular to the direction of wave movement

• vibrate along the direction of wave movement

• do not vibrate

In which of the following temperatures of air would sound travel slowest?

• –5°C

• 0°C

• 15°C

• 25°C

Sound is a form of _____.

• potential energy

• kinetic energy

• mechanical energy

• thermal energy

If a sound is high pitched and loud, the sound wave is _____.

• high frequency and high amplitude

• high frequency and low amplitude

• low frequency and high amplitude

• low frequency and low amplitude

If a sound is low pitched and loud, the sound wave is _____.

• high frequency and high amplitude

• high frequency and low amplitude

• low frequency and high amplitude

• low frequency and low amplitude

When Mr. Kelsch tells you to turn down your earbuds, he is asking you to _____.

• lower the frequency of the sound wave

• raise the frequency of the sound wave

• raise the amplitude of the sound wave

• lower the amplitude of the sound wave

Sounds with frequencies higher than 20,000 hertz are called _____.

• sonic booms

• ultrasonic

• subsonic

• super sonic