6- Radioactive Materials Flashcards
1
Q
Radon
A
Radioactive gas
2
Q
Sterilisation
A
Killing bacteria by exposing them to radiation
3
Q
Radiotherapy
A
A technique that uses gamma rays to kill cancer cells in the body
4
Q
Half life
A
The average time it takes for half of the undecayed nuclei in a sample to decay
5
Q
Activity
A
The rate of decay of nuclei
6
Q
Becquerel
A
Unit for activity
7
Q
Exponential decay
A
A graph in which the quantity halves after a given interval of time
8
Q
Background radiation
A
Traces of radiation from various sources all around us
