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17 Cards in this Set

  • Front
  • Back
How is sound produced?
Vibrating matter
What is a wave?
a disturbance moving through a solid, liquid, or a gas.
How does sound travel?
In waves
What is the frequency of a sound wave?
The number of vibrations in a given unit of time.
Sound is a ______________ wave moving outwart from its source.
What is the wavelength of a sound wave?
The distance between two compressions.
What determines the pitch of a sound?
The frequency of a vibrating object.
Objects vibrating __________ have a higher pitch.
Objects vibrating ___________ have a lower pitch.
Sound travels more quickly through ______________ than through _____________ and ______________.
liquids and gases
Why does sound travel more quickly through solids than liquids and gases?
Because the molecules of a solid are closer together.
Sound traves slowest through _______.
Why does sound travel most slowly through gases?
Because the molecules of a gas are farthest apart.
Some animals make and hear ____________________ different from those that humans can make and hear.
ranges of sound vibrations
Musical instruments __________ to produce sound.
Where can sound waves travel?
only where there is matter to transmit them
How do string instruments make sound?
The strings vibrate