parts of a wave
the highest point of a wave is called what?
crest
define angle of incidence
angle of incoming light ray
define period
the time it takes to complete one cycle
can light travel in a vacuum?
yes
the distance from crest to crest or trough to trough is called what?
wavelength
is it refraction, diffraction, or reflection when light passes through a small boundary and forms waves on the other side?
diffraction
higher frequency =____ pitch and _____ wavelength
high, short
EM waves are light waves at _______ _________.
different frequencies
what is the lowest point of a wave called?
trough
refraction occurs when?
when light passes from 1 substance to another and bends
a mechanical wave is fastest when passing through:
A. gas
B. solid
C. liquid
B. solid
Electromagnetic waves move ________ in a solid
slowest
the equilibrium of the wave halfway between the crest and the trough is referred to as what?
origin
a light beam hits a mirror and bounces off in a different direction. this is an example of refraction, reflection, or diffraction?
true or false: mechanical waves can travel through a vacuum/space
false
false
the distance from the origin to the crest or origin to the trough is called what?
amplitute
what is the Law of Reflection
the angle of incidence always equals the angle of reflection
when two troughs that are both traveling is the same direction collide, is it constructive or destructive interference?
constructive interference
which is more damaging?:
A. radio wave
B. ultraviolet wave
C. gamma ray
C. gamma ray