The Electromagnetipc Spectrum

Question 1

What’s the order for the EM spectrum

Answer 1

Radio waves
Microwaves
Infra red
Visible light
Ultra violet
X-ray
Gamma

Question 2

Which wave has the longest wavelength

Answer 2

Radio wave

Question 3

Which wave has the lowest frequency

Answer 3

Radio waves

Question 4

Which wave has the shortest wavelength

Answer 4

Gamma waves

Question 5

Which waves has the highest frequency

Answer 5

Gamma wave

Question 6

Which waves can be seen by humans

Answer 6

Visible light

Question 7

What type of waves electromagnetic radiation is?

Answer 7

Transverse wave

Question 8

What is the use and the harmful effect for gamma rays

Answer 8

Use: radiotherapy, sterilising medical equipment , treating cancer
Harmful:cell mutation, cause cancer

Question 9

What are the use/ harmful for x rays

Answer 9

Use: observing internal structures of the body
Harmful: cell mutation, causes cancer

Question 10

Ultraviolet use/harmfull

Answer 10

Use:fluorescent lamps , killing bacteria
Harmful: skin damage, blindness

Question 11

Visible light use/harmful

Answer 11

Use:photography
Harmful: eye damage (at hight intensity )

Question 12

Infrared use/harmful

Answer 12

Use: communication ( remote, controls) night vision equipment
Harmful: skin burn

Question 13

Microwaves use/harmful

Answer 13

Use:cooking, satellite communications
Harmful:internal heat of the body cells

Question 14

Radio waves use

Answer 14

Communications

Question 15

4 the same properties for all electromagetic waves

Answer 15

1. No need of medium to travel
2. All transverse
3. Obeys wave equation (wave speed= frequency x wavelength)
4. Al carries energy/ information