Radiation Flashcards
1
Q
What is background radiation
A
Radiation that is present all around us eg cosmic rays from space, rocks eg granite
2
Q
How is radioactivity formed
A
Radioactivity formed when unstable nucleus of atom give out radiation
3
Q
What are the 3 types of radiation
A
Alpha
Beta
Gamma
4
Q
What is alpha radiation
A
A helium nucleus
5
Q
What is beta radiation
A
An electron
6
Q
What is gamma radiation
A
An electromagnetic wave
7
Q
What will stop alpha radiation
A
A few cm of air or paper
8
Q
What will stop beta radiation
A
Thin piece of aluminium
9
Q
What will stop gamma radiation
A
Thick piece of lead
