Electromagnetic Waves Flashcards
1
Q
what is a EM wave?
A
a transverse wave that transfers electric and magnetic energy.
2
Q
All EM waves travel at the same ______.
A
speed
3
Q
Do EM waves need a medium?
A
No
4
Q
What EM wave has the longest wavelength?
A
Radio Waves
5
Q
List the EM waves from longest to shortest wavelength.
A
Radio Waves, Microwaves, Infrared Rays, Visible Light, Ultraviolet Rays, X-rays, Gamma Rays
6
Q
FM stations change what?
A
Frequency
7
Q
AM stations change what?
A
Amplitude
8
Q
What is the photoelectric effect?
A
the movement of electrons when light is shined on it
9
Q
What are photons?
A
Particles of light energy.
