Electromagnetic Spectrum Flashcards
1
Q
Describe electromagnetic waves
A
Transverse waves
= transfer energy from source of waves to an absorber
2
Q
Give the order of colours on the spectrum
Low frequency= first
A
Red, orange, yellow, green, blue, indigo, violet
3
Q
Describe the electromagnetic spectrum
A
Radio, microwaves, infrared, visible light, ultraviolet, X rays, gamma rays
First= low frequency and long wavelength
4
Q
Features of electromagnetic waves
A
Don’t need a medium to travel in
= can travel at same speed in a vacuum
5
Q
Facts about refraction
A
- waves can change direction when they change speed, moving from one medium to another