ionisation
- Created by: abic1
- Created on: 03-05-16 18:40
View mindmap
- ionisation
- when a photon has enough energy to remove an electron
- the ionised atoms can start chemical reactions
- only radiation with high photon energy can ionise a cell
- gamma, xray and ultraviolet can cause ionisation
- radioactive materials emit ionising gamma radiation all the time
- ionisation of the body cells is dangerous
- ionising radiation can cause cells to mutate
- mutations can cause the cells to keep on dividing and can cause cancer
- high does of radiation can kill cells altogether
- Uv radiation ionises cells and can cause sunburn and skin cancer
- increased exposure causes more damage
- physical barriers such as clothes and suncream protect from UV radiation
- lead shields absorb xrays
- xrays pass through flesh but are absorbed by bone
Comments
No comments have yet been made