Vocabulary
The lowest point in a wave
What is trough?
Sound cannot travel through this
What is a vacuum
If you are at a park and there a man playing a guitar on a bench, how could you increase your perceived volume?
What is move closer to it?
A place with a good echo
mountain, etc.
The highest point in a wave.
What is crest?
Sound can travel faster through solid, liquid or gas
What is solid
What decibel causes hearing loss
85 decibels.
an animal uses this to move around when they cannot see
echolocation
the distance between the same point on two waves.
What is wavelength
Sound can travel faster through hot or cold material
hot
What cup in a water xylophone has the lowest pitch
the most full one
How can you prevent echos in your house?
Hang pictures, rugs, add furniture
The two parts of a longitudinal wave
compression and rarefaction
This part of the wave affects its volume
What is amplitude.
This part of the wave affects the pitch.
What is frequency
What does SONAR stand for?
sound navigation and ranging.
The two types of waves
longitudinal and transverse
What vibrates so that humans can talk
vocal chords
What happens to volume if the pitch is increased?
What is it stays the same.
A firetruck is driving towards you so you hear a ______ pitch because of the _________________.
higher, doppler effect
the transfer of energy by a wave to the medium through which it travels until it disappears
absorption