Speed of Sound Quiz Part 2

What is sound a result of?

• Moving objects

• Stationary objects

• Static objects

• Vibrating objects

What are compressions and rarefactions in sound waves?

• Compressions are when air molecules are moving, rarefactions are when they are stationary

• Compressions are when air molecules are stationary, rarefactions are when they are moving

• Compressions are when air molecules are furthest apart, rarefactions are when they are closest together

• Compressions are when air molecules are closest together, rarefactions are when they are furthest apart

What is the frequency range of sound that human ears can hear?

• 30 Hz to 15 kHz

• 10 Hz to 30 kHz

• 20 Hz to 20 kHz

• 15 Hz to 25 kHz

What does the amplitude of a sound wave determine?

• The frequency of the sound

• The speed of the sound

• The pitch of the sound

• The loudness of the sound

In which medium does sound travel the fastest?

• Vacuum

• Metals

• Liquids

• Gases

What is the speed of sound in air?

• 5000 m/s

• 100 m/s

• 330 m/s

• 1500 m/s

How can the speed of sound in air be experimentally determined?

• Using a ruler and a stopwatch

• Using two microphones separated by 1m and a digital timer

• Using a telescope and a stopwatch

• Using a thermometer and a stopwatch

What is an echo in relation to sound waves?

• When sound gets transmitted through a surface

• When sound gets reflected off a surface

• When sound gets absorbed by a surface

• When sound gets refracted through a surface

What type of wave is sound?

• Longitudinal wave

• Transverse wave

• Electromagnetic wave

• Mechanical wave

What is the unit of frequency?

• J

• m/s

• Hz

• kg