electromagnetic spectrum Flashcards
1
Q
Rich Men In Velvet Use Xtra Gel
A
radio waves
microwaves
infrared
visible light
uv rays
x-ray
gamma rays
2
Q
ems waves can/are all…
A
- transverse waves
- can travel through space
- can travel through a vacuum
- have both an electric and magnetic field
3
Q
in a vacuum:
A
they all travel at the exact speed of
3.00 x 10^8 m/s.
4
Q
what is inversely related?
A
wavelength and frequency
5
Q
why are gamma rays, x-rays and ultraviolet radiation dangerous?
A
they can ionize atoms within the body which can lead to cancer, cell death or cell mutation.
6
Q
what is the ems?
A
a diagram that charts em waves.
7
Q
radio waves
A
- longest wavelength
- used to transmit data including radio, satellite and computer networks.
8
Q
micro waves
A
- cook food, transmit information and used to predict the weather.
9
Q
infrared
A
- night vision
10
Q
visible light
A
- intermediate wave lengths and frequency near the middle of the spectrum.
- looks white to our eyes but is actually made up of lots of colours.
11
Q
ultraviolet
A
- kills bacteria, phototherapy and suntanning.
12
Q
x-ray
A
- can penetrate soft tissue like skin and muscle; used in medical imagery.
13
Q
gamma rays
A
- shortest wavelength; used in radiotherapy and medical imagery.
14
Q
which colour has the longest wavelength of visible light?
A
red
15
Q
which colour has the shortest wavelength of visible light?
A
purple
