EM Radiation Flashcards
1
Q
How are EM waves produced?
A
Accelerating charges that move through space
2
Q
What does accelerating mean?
A
Changing speed ( going faster OR slower )
3
Q
What are EM waves made of?
A
Electric and magnetic fields moving perpendicularly
4
Q
What is an EM wave an example of?
A
Transverse wave
5
Q
Whenever there’s an electric field…
A
…it creates a magnetic field. They are always perpendicular
6
Q
Electromagnetic spectrum in order of increasing wavelength:
A
G X U V I M R
7
Q
What is the relation of wavelength to frequency in the EM spectrum?
A
The bigger the wavelength, the smaller the frequency
8
Q
How many frequencies of visible light are there?
A
7
R O Y G B I V
9
Q
What do frequency and amplitude impact in visible light waves?
A
Frequency- colour ; red is the biggest wavelength
Amplitude - brightness
