3 Electromagnetic Waves
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What are the same about all electromagnetic waves?
Same speed - speed of light.
What are the possible harmful effects of microwaves?
internal heating of body cells
What are the possible harmful effects of infrared?
skin burns
What are the possible harmful effects of UV?
damage to surface cells and eyes leading to skin cancer and eye conditions
What are the possible harmful effects of X-rays and gamma rays?
mutation or damage to cells in the body that can cause cancer
Which types of electromagnetic radiation is used for satellite transmission?
Microwaves and radiowaves
What type of electromagnetic radiation is used for disinfecting water?
Ultraviolet
What type of electromagnetic radiation is used for colour photography?
Visible Light
What type of electromagnetic radiation is used for scanning for broken bones?
X-rays
What type of electromagnetic radiation is used for thermal imaging?
Infrared
Lists the waves in the electromagnetic spectrum from highest to lowest frequency
Gamma, X-rays, Ultraviolet, Visible Light, Infrared, Microwave, Radiowaves
What are the dangers of X-rays to humans?
x-rays are ionising so they can cause cancer
What type of electromagnetic wave is used for sterilising food and medical equipment?
Gamma
What type of electromagnetic wave is used for the detection of cancer and its treatment?
Gamma
What type of electromagnetic radiation is used for detecting forged bank notes and security marking?
UV
What type of electromagnetic radiation is used for television remote controls and other short range communication?
infrared