Sound Flashcards

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1
Q

How is sound produced?

A

Sound is produced by vibrating sources. Sound waves propagate by causing layers of air around it to displace.

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2
Q

(Practical) Investigating sound in a vacuum:

A
  1. Place a bell and a striker into a sealed bell jar.
  2. Turn the bell on and turn the vacuum off (sound produce)
  3. Do the inverse (Sound stops)
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3
Q

What is an echo?

A

Echoes are reflections of sound waves. They are formed when sounds are reflected off hard, flat surfaces

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