Physics Key terms Flashcards
1
Q
Radioactive Decay
A
The nucleus of the isotope will emit Radiation so they can become more stable
2
Q
Ionisation
A
where radiation “knocks off” electrons from an atom. (This can lead to cancer in cells)
3
Q
Exponential Decay
A
The change gets smaller as the number gets lower
4
Q
Half-life
A
The time taken for the activity of a radioactive source to halve. (Longer half-life, less likely to Decay) It takes the same time to halve each time
5
Q
Contamination
A
An object or body contains a small amount of a radioactive isotope. If something is exposed to ionising radiation, it does not become radioactive
6
Q
Irradiation
A
An object or a body is exposed to nuclear radiation
