Q.1
What are echoes?
  • An impressionist repeating the noise
  • Reflections of sounds
  • Reflections of light
  • Refraction of sounds
Q.2
How do sound waves travel?
  • Vibrations through a medium
  • Via a carrier particle called a photon
  • Via a carrier particle called a neutrino
  • Sound waves can only travel in a vacuum
Q.3
What is an ultrasound wave?
  • An ultrasound wave is a sound wave which has a frequency higher than 20 kHz
  • An ultrasound wave is a sound wave which has the same frequency as an audible sound wave, however it has much greater energy
  • Ultrasound waves are transverse waves
  • There are no such things as ultrasound waves
Q.4
What is the loudness of a sound wave determined by?
  • The medium through which it travels
  • Its amplitude
  • Its frequency
  • Sound waves all have the same loudness
Q.5
What is the pitch of a sound determined by?
  • Its amplitude
  • Its frequency
  • The medium through which it travels
  • Sound waves all have the same pitch
Q.6
The car horn and car unfortunately find themselves under water in a river. The car horn still produces a sound wave with a frequency of 680 Hz, however the speed of the sound is dramatically increased to 1485 m/s. What is the wavelength of the sound wave in water?
  • 0.46 m
  • 0.92 m
  • 2.18 m
  • 1,009,800 m
Q.7
What kind of a wave is a sound wave?
  • Latitudinal
  • Electromagnetic
  • Longitudinal
  • Transverse
Q.8
If a sound wave is made louder, what happens to the amount of energy the wave has?
  • The energy increases
  • The energy decreases
  • The energy remains constant
  • More information is required to answer the question
Q.9
A car horn produces a sound wave of frequency 680 Hz. When the sound wave is traveling through air, it has a wavelength of 0.5 m. What is the speed of the sound wave?
  • 300 m/s
  • 330 m/s
  • 340 m/s
  • 400 m/s
Q.10
If the pitch of a sound wave is increased, does the time period between waveforms increase or decrease?
  • Increases
  • Decreases
  • Remains the same
  • Randomly changes to a discrete value
0 h : 0 m : 1 s