Electromagnetic Spectrum

Question 1

Describe electromagnetic waves

Answer 1

Transverse waves
= transfer energy from source of waves to an absorber

Question 2

Give the order of colours on the spectrum
Low frequency= first

Answer 2

Red, orange, yellow, green, blue, indigo, violet

Question 3

Describe the electromagnetic spectrum

Answer 3

Radio, microwaves, infrared, visible light, ultraviolet, X rays, gamma rays

First= low frequency and long wavelength

Question 4

Features of electromagnetic waves

Answer 4

Don’t need a medium to travel in
= can travel at same speed in a vacuum

Question 5

Facts about refraction

Answer 5

• waves can change direction when they change speed, moving from one medium to another