Electromagnetic Waves Flashcards
(8 cards)
1
Q
Do EM waves require a medium?
A
No, they can travel through space.
2
Q
What kind of wave is an EM wave?
A
Transverse wave with electric and magnetic fields.
3
Q
What is the relationship between wavelength and frequency?
A
Inverse: As frequency increases, wavelength decreases.
4
Q
Which EM wave has the longest wavelength?
A
Radio waves.
5
Q
Which EM wave has the shortest wavelength and highest energy?
A
Gamma Rays
6
Q
What part of the EM spectrum can humans see?
A
Visible light (ROYGBIV).
7
Q
What are three types of UV rays and their effects?
A
UV-C: Kills germs
UV-B: Causes sunburn, DNA damage
UV-A: Causes aging
8
Q
How are X-rays used in industry?
A
To check for cracks in structures.
