Visible Light Flashcards
0
Q
What is the name for the seven colours of the rainbow?
A
ROYGBIV
Red, orange, yellow, green, blue, indigo, violet
1
Q
What is visible light?
A
The portion of the electromagnetic spectrum that human eyes can detect
2
Q
Which colour has the longest wavelength?
A
Red
3
Q
Which colour has the shortest wavelength?
A
Violet
4
Q
Describe radio waves
A
• low energy waves- long wavelengths
• FM, AM, TV shows and radios
• remote control items,
Cell phones, wireless devices, etc
5
Q
Describe microwaves
A
- first used in radar, row used in communication
* consumer use (microwave ovens), wifi
6
Q
Describe infrared radiation
A
- often detected as heat
- can be seen by night vision goggles
- used in heat lamps, remote controls, lasers
7
Q
Describe ultraviolet radiation
A
- higher energy (shorter wavelengths) than visible light waves
- causes skin to tan it burn
- skin cancer or blindness
8
Q
Describe x-rays
A
- high energy (short wavelength)
- medical imaging of teeth/bones
- can pass through soft tissues
- security equipment (luggage)
- risk if cell death/cancer with overuse
9
Q
Describe gamma rays
A
- highest energy (shortest wavelength)
- can be generated in nuclear explosions
- will kill living cells
- can be used to kill cancer (radiation treatment
10
Q
What does LOST stand for?
A
L- location
O- orientation
S- size
T- type
