Electromagnetic Spectrum

Question 1

Order the EM spectrum

Answer 1

Radio waves
Microwaves
Infrared
Visible
Ultraviolet
X-ray
Gamma ray

Question 2

Wave speed=

Answer 2

Frequency times wavelength

All wave speeds are 30000 m/s

Question 3

Wavelength, frequency, energy changes

Answer 3

Longer wavelength

Lower frequency and energy

Question 4

Radiowave and gamma ray wavelength

Answer 4

10000m

10 to the -15

Question 5

Radio wave uses

Answer 5

TV, radio

Question 6

Microwaves

Answer 6

Satellite comms, cooking food, phones, wi-fi

Question 7

Infrared uses

Answer 7

Electric heaters, cooking food, infrared cameras

Question 8

Visible uses

Answer 8

Fibre optic communications, camera

Question 9

UV uses

Answer 9

Energy efficient lamps, sun tanning, security cameras

Question 10

X-ray uses

Answer 10

Medical imaging, airport security

Question 11

Gamma ray uses

Answer 11

Medical treatment, sterilisation of equipment

Question 12

How are they produced?

Answer 12

Electric field at right angles to AC magnetic field