A
Sound must travel through a __ in order to be heard.
medium
A form of energy made up of vibrations is __.
sound
Animals use sound waves to locate food is called __.
echolocation
Which medium would the transfer of energy be slower in?
air
steel
water
air
__ is how loud or quiet a sound is.
Volume
Samuel Morse invented __.
Morse Code
Sound waves travel fastest through __.
steel
high
Alexander Graham Bell invented the __.
telephone
The number of waves that pass a point in one second is __.
frequency
Sound travels to the brain from the __ ear.
inner
If the pitch of a sound is low, then the frequency will be __.
low
Why did God give people the gift of language & communication? (2 reasons)
- God wanted a relationship with people
- God wanted people to communicate with Him & each other
- God wanted people to communicate with Him through prayer
If the amplitude of a sound is high, then the volume will be __.
high
__ are tiny bits of matter.
Particles
True or False: In colder climates, sound travels slower than hotter climates.
True
True or False: Sound waves have different wavelengths.
True
Longitudinal waves have a __ pattern.
back-and-forth
timbre
The measurement of a wave is __.
amplitude
Binary code represents information using __.
two symbols (0,1)
Why are footsteps quieter on carpet than on tile floors?
Carpet absorbs the sound waves of footsteps and are quieter, while tile floors reflect sound waves of footsteps and are lounder.
The sound waves are louder in an empty gym because the sound waves are __.
reflected
__ is how high or low a sound is.
Pitch
What is vibration?
A rapid back-and-forth motion