Please enable JavaScript.
Coggle requires JavaScript to display documents.
P5: Electromagnetic Spectrum (Uses of waves (Visible Light (Lamps, See in…
P5: Electromagnetic Spectrum
3 ways to protect yourself from electromagnetic waves
Time of exposure
Shielding yourself from exposure
Distance from exposure
High frequency wave exposure leads to cancer because there is ionizing radiation which shines at the skin and can take some electrons out of the atoms. This damages the DNA in the cells which can lead to cancer.
2 things all electromagnetic waves have in common
Don't need matter to travel through. They can travel through a vacuum
Transverse vibrations in electrical and magnetic waves
Shortest wavelength to the longest wavelength
Radio, Microwave, Infrared, Visible Lights, UV, X-Rays and Gamma rays.
Radio waves can transmit further than microwaves because they have a higher frequency
The higher the frequency the lower the wavelength
Uses of waves
Visible Light
Lamps
See in the dark
X Rays
Bone examination
Checks for broken bones and fractures
Infrared
Change TV channels
Cooking
UV
Can sterilise drug and food products
Can cause the body to produce vitamin D
Gamma
Treat cancer
Sterilise medical equipment
Micro
Communication
Cooking
Radio
Communication
TV