What does nuclear fission mean?
Why is the nuclear fission of uranium-235 called a chain reaction?
When the nucleus of an uranium atom is split in a nuclear reaction, an immense amount of energy is released, far more
than from a chemical reaction.
What do we use this energy for?
What harmful emissions do nuclear power stations produce?
State two reasons why waste radioactive waste from nuclear reactors needs to be stored safely for a long period of time.
Nuclear power station accidents can be caused by ‘human error.’
Name one other way a nuclear power station accident could occur.
A radioactive source has a half-life of 30 minutes.
What percentage of the source remains after two hours?
Cobalt-60 has a half life of 5 years.
A sample of cobalt-60 has an activity of 2,000 Bq.
What will the activity be after 15 years?
Created by Mr S Lee over 1 year ago