The fun stuff- em spectrummmmm yaas queen

Question 1

list the em spectrum in order

Answer 1

Radio & TV

Microwave

Infra- red

Visible

Ultraviolet

X-ray

Gamma

Question 2

what is the key wavelength of radio and tv

Answer 2

Greater than 1

Question 3

what is the key wavelength of Microwave

Answer 3

1 x 10^-2

Question 4

what is the key wavelength of Infra-red

Answer 4

1 x 10^-5

Question 5

what is the key wavelength of Visible

Answer 5

400 × 10^-9 to 700 × 10^-9

Question 6

what is the key wavelength of Ultraviolet

Answer 6

1 x 10 ^ -8

Question 7

what is the key wavelength of X-ray

Answer 7

1 x 10^ - 10

Question 8

what is the key wavelength of Gamma

Answer 8

1 x 10^ -12

Question 9

what is the key frequency of Radio & TV

Answer 9

less than 3.0 x 10^8

Question 10

what is the key frequency of microwave

Answer 10

1 x 10^10

Question 11

what is the key frequency of infra- red

Answer 11

1 x 10^13

Question 12

what is the key frequency of visible light

Answer 12

7.5 x 10^14 to 4.3 x 10^14

Question 13

what is the key frequency of ultraviolet

Answer 13

1 x 10^16

Question 14

what is the key frequency of X- ray

Answer 14

1 x 10^ 18

Question 15

what is the key frequency of Gamma

Answer 15

1 x 10^ 20

Question 16

what is the source(s) for Radio & TV

Answer 16

electric circuits

Question 17

what is the source(s) for Microwaves

Answer 17

microwave ovens and electric circuits

Question 18

what is the source(s) for Infra-red

Answer 18

the sun, hot/warm objects, electric circuits

Question 19

what is the source(s) for Visible

Answer 19

the sun, LEDS, laser, lamps

Question 20

what is the source(s) for Ultraviolet

Answer 20

the sun, gas discharge lamps

Question 21

what is the source(s) for X-ray

Answer 21

very high speed electrons hitting a metal target.

Question 22

what is the source(s) for Gamma

Answer 22

decay of radioactive nuclei

Question 23

radio + tv detectors

Answer 23

an aerial

Question 24

what are the detectors for Microwave

Answer 24

aerial

Question 25

what are the detectors for Infra-red

Answer 25

Heat sensitive paper, black bulb thermometers, electronic detector e.g. LDR, photodiode, thermistor

Question 26

what are the detectors for visible

Answer 26

the retina of the eye, photographic film, electronic sensors, LDRs

Question 27

what are the detectors for ultraviolet

Answer 27

Causes some materials to fluoresce (glow in the dark)

Question 28

what are the detectors of X-ray

Answer 28

photographic film

Question 29

what are the detectors of Gamma

Answer 29

photographic film, GM tube

Question 30

what are the Radio & TV applications

Answer 30

Signals for radio and TV, communications

Question 31

what are the microwaves applications

Answer 31

Communications with satellites and mobile phones as well as heating food rapidly

Question 32

what are Infra-reds applications

Answer 32

Security lighting detector, tv remote control

Question 33

what are Visibles applications

Answer 33

Sight, photography, fibre optics used in communications and Internet

Question 34

what are Ultraviolets applications

Answer 34

Sun-tan lamp, detecting UV inks in bank notes, killing bacteria in water treatment, making vitamin D

Question 35

what are X-rays applications

Answer 35

imaging bones to check for breaks, customs checking of container contents

Question 36

what are 5 of Gamma’s applications

Answer 36

killing cancer, medical tracer, sterilising medical equipment, hole detection in underground pipes, extending shelf life of strawberries and other fruit