20.3 Nuclear Issues Flashcards
0
Q
Why is radiation hazardous?
A
It ionises substances it passes through
1
Q
What is background radiation?
A
Radioactive substances all around us. For example: Cosmic rays Food and drink Medical Air travel Ground Buildings Natural Nuclear weaponry tests Nuclear power
2
Q
What do people working with X-rays wear?
A
Personal radiation monitors
3
Q
How is background radiation caused?
A
Mainly by radon gas in the ground from rocks. It emits alpha, so hazard when inhaled. Can seep into buildings.
4
Q
What happened in Chernobyl 1986?
A
Nuclear reactor exploded. Cloud of radioactive material from fire drifted over Europe. 100,000 people evacuated from Chernobyl and over 30 died. Many people still developing cancer or leukaemia.
5
Q
Could Chernobyl happen again?
A
Most reactors different design
No high speed shut down system
Lessons learnt
6
Q
Risks so radiation depends on..
A
Type
Amount
Source inside/outside body
Length exposed
