P5.2.2 - Uses and danger of EM radiation Flashcards
What are the uses of light waves?
To see cameras
What is the hazard of light waves?
Nothing
What are the uses of infra-red?
Night vision, remote controls
What are the hazards of infra-red?
It can absorbed by the skin, causing it to heat up
What are the uses of microwaves?
Cooking food, mobile phones, satellites
What are the hazards of microwaves?
It can heat up water, so it is a possible risk to humans
What are the uses of radio waves?
Radio and TV signals
What are the hazards of radio waves?
None
What are the uses of ultraviolet?
It produces vitamin D, detects bodily fluid; killing bacteria in water
What are the hazards of ultraviolet?
It is somewhat ionising and can damage skin cells leading to skin cancer
What is the use of X-Rays?
Using for imaging and treatment of some cancers
What are the hazards of X-rays?
It is lightly ionising and likely to damage cells and give rise to cancer
What are the uses of gamma?
It can be used for the treatment of cancer
What are the hazards of gamma?
It is quite ionising and likely to damage cells and give rise to cancer
