Sound Flashcards
1
Q
how are sound waves caused?
A
by vibrating objects
2
Q
how are vibrations passed?
A
through the surrounding medium as a series of compressions and rarefactions
3
Q
what happens when a sound wave travels through a solid?
A
causes particles in solid to vibrate
4
Q
what determines which frequencies sound can transmit?
A
an objects size, shape and structure
5
Q
what happens to the wavelength?
A
gets longer when the wave speeds up and shorter when it slows down
6
Q
what happens to the frequency?
A
doesn’t change
7
Q
how does sound travel?
A
- at different speeds in different media
- faster in liquids than they do in gases
- faster in solids that they do in liquids
8
Q
when do sound waves reflect?
A
in hard, flat surfaces
echoes
