Cher 5bap

Question 1

Fissle fissle mass

Answer 1

Cable of sustaining a fissle reaction v mass containing or made of fissle material

Question 2

Neutron moderation v neutron moderator

Answer 2

Process of reducing the speed (ke) of neutrons v materials capable of nuetron moderation by collision with neutrons

Question 3

Neutron multiplication factor

Answer 3

At a point in time the average number of neutrons per fission reaction that will cause further fission reaction

Question 4

Subcriticality v supercriticality

Answer 4

State of a fissle mass where the fission reactions occurring is decreasing v state of fissle mass where the reaction occurring is increasing

Question 5

What is k

Answer 5

Neutron multiplication factor used to describe average number of fission reactions that a fission reaction will occur

Question 6

Decrease , increase, constant

Answer 6

K<1 subcritical
K=1 critical
K>1 supercritical

Question 7

Criticality of fissle mass depends on

Answer 7

How eash it is for neutron from another fission reaction to cause chain reaction (an additional fission reaction)

Question 8

What happens to chain fission reaction k with increase surface area and mass

Answer 8

Increase
Mass: more material more likely to capture neutrons
Surface area: travel further increasing capturing chance (trigger fission reaction)

Question 9

Control rod changes

Answer 9

Neutrons more likely to be absorbed by rod decreasing k

Question 10

Neutrons in fission reactions move to fast causing

Answer 10

Fission before escaping fissle nuclei

Question 11

Viability of nuclear energy

Answer 11

Arguments regarding nuclear energy :
Environmental impact
Sociocultural impact
Economic impact