P5.2.1 - Electromagnetic waves

Question 1

What is a spectrum?

Answer 1

A continuous range of frequencies

Question 2

What is an electromagnetic spectrum?

Answer 2

A group of waves that forms a continuous spectrum

Question 3

What do electromagnetic waves consist of?

Answer 3

Oscillating electric and magnetic fields

Question 4

What is a vacuum?

Answer 4

A region with no particles of matter in it

Question 5

What is infrared radiation?

Answer 5

Electromagnetic radiation with a longer wavelength that visible light,mused in cooking and communication

Question 6

What is the order of the electromagnetic spectrum in terms of increasing wavelength?

Answer 6

Gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, radio waves

Question 7

What is the order of the electromagnetic spectrum in terms of increasing frequency?

Answer 7

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

Question 8

At what velocity do all electromagnetic waves travel through a vacuum?

Answer 8

3 x 10 to the power of 8 m/s