Background Radiation Flashcards
1
Q
Name two natural sourcesof radiation
A
- High energy cosmic rays from space
- Rocks (like granite)
2
Q
Name two man-made sources of radiation
A
- Fall out from nuclear weapons testing
- Nuclear accidents
3
Q
Which two factors affect the levels of background radiation and someone’s dose of radiation?
A
Location
Occupation
4
Q
Explain why if there is a small amount of radioactive nuclei remaining in a sample, it still might be unsafe to dispose of
A
There are still some atoms remaining
So there is still some radiation emitted
So there is still a small risk of irradiation or contamination
5
Q
Explain why if there is a small amount of radioactive nuclei remaining in a sample, it is safe to dispose of
A
The number is low so there will be a low activity
So there will be a unlikely to be a substantial risk of contamination/radiation