Wave Basics
What is a medium
Anything that a wave travels through
Sound waves
Why do sound waves need a medium?
They need particles to vibrate.
Amplitude is a waves what?
Height or Energy
What is an echo?
Reflection of sound
Which waves need a medium?
Sound waves, mechanical waves
What are compressions?
Particles moving closer together
Loud vs. Quiet depends on what part of the wave?
The amplitude
Higher frequency means a _______ wavelength.
Shorter
How can I hear music through a car window?
Transmission
Which waves do NOT need a medium to travel?
Light waves, electromagnetic waves
What are rarefactions?
Particles spreading out
High vs. Low pitch depends on what part of the wave?
Frequency
Low frequency sound has a _____ pitch.
Low
Absorption
What is frequency?
Number of waves per unit of time
What is an example of a transverse wave?
Light waves
Why do we see red when we look at a strawberry?
Red light is reflected.
What is the relationship between wavelength and frequency?
Inverse. As one increases the other decreases.
What is the law of reflection?
The angle it came in at will be the same angle is leaves at.
How do you calculate frequency?
Number of waves divided by time.
Name 2 parts of a transverse wave.
Crest, Trough, Amplitude, Wavelength
Why do we see rainbows?
Light is refracted and separated.
If I increase wavelength, what happens to frequency?
It decreases.
Bending of light