Nuclear fission and fusion

Question 1

What is nuclear fission

Answer 1

the splitting up of large and unstable nuclei into smaller nuclei

Question 2

What is nuclear fusion

Answer 2

The fusion of two light nuclei to make one heavy nuclei

Question 3

Why is nuclear energy good

Answer 3

Cheap to run + No GHG

Question 4

Why is nuclear energy bad

Answer 4

Expensive to set up, Waste is expensive to get rid of, Nuclear disaster

Question 5

How does nuclear fission work

Answer 5

A nucleus is fired into the nuclei of uranium 235, this causes it to split into two smaller nuclei, also releasing neutrons and lota of gamma rays/energy this is then repeated causing a chain reaction

Question 6

How are the gamma rays converted into electricity

Answer 6

gamma rays heat up water which is then turned into steam, which drives turbines gathering electricity

Question 7

What are the two ways nuclear fission can have

Answer 7

Spontaneously and by absorbing a neutron

Question 8

Compare the conditions needed for nuclear fusion and fission

Answer 8

The conditions for Fission are very easy to make
Where as fusion needs an extremely high temperature and an extremely high pressure

Question 9

What are control rods and what are there use

Answer 9

They can be used to slow down or completely stop a reaction by absorbing neutrons released from nuclear fission.

Question 10

What does a moderator do

Answer 10

A moderator is a material used in a nuclear reactor to slow down the neutrons produced from fission.