EM spectrum

Question 1

the order of the EM spectrum from low frequency to high frequency?

Answer 1

radio, micro, infrared, visible, UV, X-rays and gamma rays

Question 2

what is the order of the EM spectrum in order of increasing wavelength?

Answer 2

gamma, x-rays, UV, visible, infrared, micro, radio

Question 3

red….

Answer 3

monkeys in vietnam use xylophones greatly (low frequency-> high frequency)

Question 4

can EM waves travel through a vacuum?

Answer 4

yea

Question 5

are EM waves transverse or longitudinal?

Answer 5

transverse

Question 6

EM waves travel at what speed?

Answer 6

3 x 10 to the power of 8 m/s

Question 7

what are the uses of radio waves?

Answer 7

TV and radio communication and astronomy

Question 8

what are the uses of microwaves?

Answer 8

satellite TV and mobile phones and also heating food

Question 9

what are the uses of infrared?

Answer 9

heat cameras, close- range heating

Question 10

what are the uses for visible light?

Answer 10

vision, photography and optical fibres

Question 11

what are the uses of UV rays?

Answer 11

tanning beds, security marking

Question 12

different wavelengths of light as different colours from longest wavelength to shortest wavelength?

Answer 12

red, orange, yellow, green, blue, indigo, violet

Question 13

different wavelengths of light as different colours- from highest frequency to lowest frequency

Answer 13

violet, indigo, blue, green, yellow, orange, red

Question 14

uses of X rays?

Answer 14

medical screening and security screening

Question 15

uses of gamma rays?

Answer 15

sterilising food and medical equipment

Question 16

what are the dangers of microwaves?

Answer 16

internal heating of body tissue

Question 17

what are the dangers of infrared?

Answer 17

skin burns

Question 18

what are the dangers of ultraviolet?

Answer 18

damage to surface cells and blindness

Question 19

what are the damages of gamma rays?

Answer 19

cancer and mutation of cells

Question 20

what can be used to protect against the effects of infrared radiation?

Answer 20

insulating materials

Question 21

what is used as a protective measure to reduce exposure to UV?

Answer 21

suncream

Question 22

what can you do to reduce the risk of gamma rays?

Answer 22

wear LED clothing

Question 23

how can you avoid the effects of infrared waves?

Answer 23

using shiny silvery surfaces such as aluminium