Sound Quiz (Ashoka)

Sound waves that are beyond the range of human ear are known as ----

• 
  Infrasonic waves

• 
  Ultrasonic waves

• Audible Waves

If you want to change the pitch of a sound, you have to change the ___

• 
  speed

• 
  volume

• 
  

  amplitude

• 
  frequency

This is what you get when sound waves are reflected, or bounce back, off of a hard surface.

• 
  Amplitude

• 
  echo

• 
  Pitch

• 
  Volume

What unit is the intensity of sound measured in?

• 
  decibels (dB)

• 
  

  Hertz (Hz)

• 
  meters per second (m/s)

• 
  meters

What is frequency?

• 
  the number of vibrations per second

• 
  the loudness or softness of a sound

• 
  how high or low a sound is

• the back and forth movement of matter

Sound is a form of?

• heat
• energy
• light

An object that does not vibrate cannot produce

• 
  Sound

• 
  Light

• Electricity

• Heat

Why do we see lightning before we hear the thunder?

• Thunder travels faster than lightning.
• We see lightning before we hear thunder because light travels faster than sound.
• 
  Our eyes trick us.

• they're two separate things..

In which medium sound can't travel?

• Liquid

• Solid

• Vacuum
• Air

In which medium speed of sound are fastest?

• Liquids
• Gases
• Vacuum
• Solids