Electromagnetic Waves Flashcards
1
Q
List the three properties of electromagnetic waves.
A
- Can travel in a vacuum
- Travel at exactly the same speed in a vacuum
- Are transverse waves.
2
Q
What property is unique to electromagnetic waves?
A
They can travel in a vacuum
3
Q
List the seven electromagnetic waves in order of increasing wavelength.
A
Gamma waves, X-rays, ultraviolet light, visible light, infrared light, microwaves, radio waves
4
Q
Wavelength of gamma waves
A
0.01 nm
5
Q
Wavelength of X-rays
A
0.1 nm
6
Q
Wavelength of visible light
A
0.5 µm
7
Q
Wavelength of infrared light
A
0.01 mm
8
Q
Wavelength of microwaves
A
3 cm
9
Q
Wavelength of radio waves
A
1000 m
10
Q
Use of gamma waves
A
Sterilisation of medical equipment
11
Q
Use of X-rays
A
To detect broken bones
12
Q
Use of ultraviolet light
A
Gives a sun tan
13
Q
Use of visible light
A
Photosynthesis
14
Q
Use of infrared light
A
Toasters
15
Q
Use of microwaves
A
Mobile phone communications
