Sound Waves and Celestial Bodies Quiz

Which of the following statements about sound waves is true?

• Sound waves can travel through a vacuum

• Sound waves are longitudinal waves

• Sound waves have no frequency

• Sound waves do not need a medium

A sound wave has a frequency of 500 Hz and a wavelength of 0.68 m. What is its speed?

• 220 m/s

• 300 m/s

• 340 m/s

• 500 m/s

What happens to the pitch of a sound when its frequency increases?

• It decreases

• It remains the same

• It increases

• It depends on amplitude

The amplitude of a sound wave determines its…

• Pitch

• Speed

• Loudness

• Wavelength

Which of the following correctly describes compressions in a sound wave?

• Areas of low pressure

• Areas where molecules are close together

• Areas with no molecules

• Areas of high wavelength

A wave has a period of 0.0025 seconds. What is its frequency?

• 200 Hz

• 250 Hz

• 400 Hz

• 500 Hz

If the speed of sound in air is 340 m/s and a sound wave has a frequency of 170 Hz, what is its wavelength?

• 0.5 m

• 1.0 m

• 2.0 m

• 3.5 m

Which type of wave interaction occurs when two waves meet and reinforce each other?

• Destructive interference

• Constructive interference

• Reflection

• Refraction

What is the unit of frequency?

• Newton

• Pascal

• Hertz

• Joule

Which of the following materials would allow sound to travel the fastest?

• Air

• Water

• Steel

• Vacuum