physics 4 Flashcards
1
Q
what is the structure of a beta particle?
A
it its a fast moving electron emitted from the nucleus
negative charge and very small mass
2
Q
what material could be used to stop beta decay?
A
aluminium
3
Q
what property of nuclear radiation gives an increased risk of cancer?
A
due to its ability to ionise atoms and damage DNA
4
Q
what is the unity for the activity of a radioactive source?
A
Becquerels
5
Q
A
