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Alpha
Gamma
(no change)
Beta
What is alpha made of?
2 protons and 2 neutrons
What is beta made of?
1 electron
What is gamma made of?
Electromagnetic ray
What is alpha stopped by?
Air/paper
What is beta stopped by?
A few cm of aluminium
What is gamma stopped by?
Almost completely stopped by lead
What ionising power does alpha have?
High ionising power
What ionising power does beta have?
Medium ionising power
What ionising power does gamma have?
Low ionising power
Alpha description
Has a helium nucleus and is made from 2 protons and 2 neutrons
Beta description
High energy and fast moving electron
Gamma description
Electromagnetic ray