Electromagnetic Waves Flashcards
1
Q
Order of em waves,, high-low
A
Gamma, X-rays, uv, visible light, infrared, microwaves, radio waves
2
Q
Transverse def
A
- particles move up and down
- perpendicular to wave direction
- eg - visible light, X-rays
3
Q
Longitudinal def
A
- particles travel backwards and forwards
- parallel to wave direction
- eg - sound waves
4
Q
Amplitude units
A
Amps
5
Q
Frequency units
A
Hz
6
Q
Wave length units
A
Lander
7
Q
Wave def
A
Waves transfer energy through a medium without transferring matter
8
Q
What direction | dense to denser
A
Towards normal
9
Q
What direction | denser to dense
A
Away from the normal
10
Q
Gamma uses
A
Radiotherapy
Sterilise food and medical equipment
11
Q
X-rays
A
See inside ppl
Airport security
Astronomers
12
Q
Ultra violet uses
A
Sun tan
Detecting forged bank notes
Kill microbes
Sterilise
13
Q
Visible light uses
A
See things
Disks, cd, dvd
14
Q
Infrared uses
A
Police helicopter
Remote controls
Heal sport injuries
15
Q
Micro waves uses
A
Cooking
Mobile phones
WiFi
Speed cameras
