Electromagnetic spectrum

Question 1

What type of waves are all electromagnetic waves?

Answer 1

Transverse

Question 2

What do all electromagnetic waves to do?

Answer 2

Transfer energy from the source of observer

Question 3

List the main groupings of the electromagnetic spectrum in order

Answer 3

EMIVUXG

Question 4

List the colours of the visible spectrum in order

Answer 4

Red, orange, yellow, green, blue, Indigo, violet

Question 5

Which part of the electromagnetic spectrum has the longest wavelength?

Answer 5

Radio waves

Question 6

Which part of the electromagnetic spectrum has the shortest wavelength?

Answer 6

Gamma rays

Question 7

Which part of the electromagnetic spectrum has the highest frequency?

Answer 7

Gamma rays

Question 8

Which part of the electromagnetic spectrum has the lowest frequency?

Answer 8

Radio waves

Question 9

What happens to potential danger associated with the electromagnetic waves as frequency increase?

Answer 9

It increases

Question 10

What happens to the potential dangers associated with an electromagnetic wave as wavelength increases?

Answer 10

It decreases

Question 11

What are the harmful effects on humans of excessive exposure to microwaves?

Answer 11

Internal heating of body cells which causes damage to them

Question 12

What are the harmful effects on humans to excessive exposure to infrared?

Answer 12

Skin burns

Question 13

What are the harmful effects on humans to excessive exposure to ultraviolet?

Answer 13

Damage to surface of cells and eyes , leading to skin cancer and eye conditions

Question 14

What are the harmful effects on humans of excessive exposure to x-rays and gamma rays?

Answer 14

Mutation or damage to cells in the body

Question 15

Give uses of radio waves

Answer 15

Broadcasting, communication, satellite transmissions

Question 16

Give uses of microwaves

Answer 16

Cooking, communications
And satellite transmissions

Question 17

Give uses of infrared

Answer 17

Cooking, thermal imaging, short range, communication, optical fibres, TV remote controls, security systems

Question 18

Give uses of visible light

Answer 18

Vision, photography, illumination

Question 19

Give uses of ultraviolet

Answer 19

Security marking, fluorescent lamps, detecting forged banknotes, disinfectant water

Question 20

Give uses of x-rays

Answer 20

Observing the internal structure of objects, airport security scanners, medical x-rays

Question 21

Give uses of gamma rays

Answer 21

Sterilising food and medical equipment, detection of cancer, treatment of cancer

Question 22

How can radio waves produced?

Answer 22

Oscillation in electrical circuits

Question 23

What can radio waves induce?

Answer 23

Oscillations an electrical circuits

Question 24

What can changes in atoms and nuclei do?

Answer 24

Generate radiations over a wide frequency range, can be caused by absorption of a range of radiation