Paper 1: Electromagnetic Spectrum

Question 1

What type of waves are EM waves?

Answer 1

Transverse

Question 2

What speed do EM waves travel at?

Answer 2

3x10 (to the power of 8)

Question 3

What do EM waves transfer?

Answer 3

Energy

Question 4

As frequency increases, what happens to wavelength?

Answer 4

It decreases

Question 5

What are the names of the different types of EM waves?

Answer 5

Radio waves
Micro waves
X rays
Infared
Visible light
Gamma rays
Ultra violet

Question 6

What are the uses of gamma rays?

Answer 6

Sterilise food and medical equipment
Detect cancer
Treat cander

Question 7

What are the dangers of gamma rays?

Answer 7

Can cause mutations (cancer)

Question 8

What are the uses of x rays?

Answer 8

Look inside objects
Airport security scanners

Question 9

What are the dangers of x rays?

Answer 9

Can cause mutations (cancer)

Question 10

What are the uses of ultra violet?

Answer 10

Detect security marks
Fluorescent lamps
Detect forged banks notes
Disinfect water

Question 11

What are the dangers of ultra violet?

Answer 11

Can cause skin damage (sunburn) - lead to skin cancer
Lead to eye conditions

Question 12

What are the uses of visible light?

Answer 12

Allows us to see
Lights up rooms and streets
Photography

Question 13

What are the dangers of visible light?

Answer 13

None

Question 14

What are the uses of infared?

Answer 14

Cooking
Thermal images
Short range communication
Remote controls
Send information along optical fibres
Security systems

Question 15

What are the dangers of infared?

Answer 15

Skin burns

Question 16

What are the uses of microwaves?

Answer 16

Mobile phones
Cooking

Question 17

What are the dangers of microwaves?

Answer 17

Could heat water inside body, heating cells

Question 18

What are radio waves used for?

Answer 18

Broadcasting
Communication

Question 19

What are the dangers of radio waves?

Answer 19

None