2.9 Flashcards
1
Q
Two main processes?
A
Nuclear fission
Nuclear fusion
2
Q
What does fission mean?
A
Breaking up
3
Q
What does nuclear fission do?
A
It releases energy
4
Q
What are uranium isotopes?
A
Uranium -283 and -235 (both are radioactive)
5
Q
What is nuclear fission?
A
Inside a nuclear reactor, the fissile U-235 nuclei can be broken up into large daughter nuclei if they are bombarded by slow-moving electrons
6
Q
What can the two daughter nuclei be slowed down by?
A
A moderator to go on and form three further fission events
7
Q
What is a chain reaction?
A
More free neutrons are produces, which themselves, in turn can produce the fission of other U-235 nuclei
8
Q
How do you control fission?
A
1- Moderator
2- Control rods
9
Q
A
