What does ultraviolet waves lie between?
Visible light and X-rays in electromagnetic spectrum
What does ultraviolet used for?
Security marking and sunbeds
How can ultraviolet cause damage?
Sunburn and skin cancer
harmful to the eyes
How are X-rays and gamma different?
Produced in different ways
How are X-rays used for?
Used to make images of bones to check for fractures
detect cracks in metal objects
What are gamma rays used for?
Killing harmful bacteria in food
prevents food poisoning and sterling surgical instruments
Damage about gamma rays
but can kill cancer cells
Process of ionisiation
Gamma rays and X-rays pass through substances - knock electrons pit of atom in substance
leaving atoms with positive charge
Damage of ionisation
Kill or damage cells
Why do people who work with ionisation wear a firm badge?
Radiation exposes the flim in badge
worker's exposure is monitored