Nuclear Physics

Question 1

To Convert Electron Volts to Joules

Answer 1

Energy (Joules) = (Electron Volts) / (1.6 X 10^-19)

Question 2

Describe Fissile

Answer 2

The quality of an atom being able to fission

Question 3

Describe Fission

Answer 3

Fission is the splitting of an atom into two or more smaller ones

Question 4

Describe Fusion

Answer 4

Fusion is the fusing of two or more smaller atoms into a larger one.

Question 5

SI Unit For Radiation Absorption

Answer 5

Sv

Question 6

Convert Joules to Electron Volts (eV)

Answer 6

Electron Volts = Energy (Joules) X Electron Charge

Question 7

Charge of Electron

Answer 7

1.6 X 10^-19

Question 8

Speed of Radiations (In Order)

Answer 8

Gamma, Beta, Alpha

Question 9

Most Dangerous Radiation

Answer 9

Gamma

Question 10

How to Store Gamma

Answer 10

Thick Lead Box (As gamma is highly penetrating)

Question 11

How to Store Alpha

Answer 11

Carboard Box (As alpha penetration can be blocked by paper)

Question 12

How to Block Beta

Answer 12

Few Millimetres of Aluminium

Question 13

T

Answer 13

10^12

Question 14

G

Answer 14

10^9

Question 15

M

Answer 15

10^6

Question 16

K

Answer 16

10^3

Question 17

c

Answer 17

10^-2

Question 18

m

Answer 18

10^-3

Question 19

Mew (Weird m/u?)

Answer 19

10^-6

Question 20

九 （Basically The Same)

Answer 20

10^-9

Question 21

p

Answer 21

10^-12

Question 22

Half-life

Answer 22

The time taken for the radioactivity of a specified isotope to fall to half its original value

Question 23

Explain Penetration vs. Ironizing Capability

Answer 23

Ionising atoms takes energy, so when trying to penetrate the radiation has less energy available. Therefore, as one increases the other decreases.

Question 24

Explain Fissile

Answer 24

The ability of an isotope to FISSION

Question 25

Explain Fertile

Answer 25

The ability for a non fissile material to be converted to a fissile material

Question 26

Uranium-238 (Fissile or Fertile)

Answer 26

FERTILE

Question 27

Uranium-235 (Fissile or Fertile)

Answer 27

FISSILE

Question 28

Uranium-232 (Fissile or Fertile)

Answer 28

Although technically FISSILE… it is negligible in a chain reaction as there is so little

Question 29

Describe Fuel Rods

Answer 29

Contain Uranium-235 fuel pellets for nuclear fission

Question 30

Describe Control Rods

Answer 30

Contain neutron absorbing materials to control the rate of fission reactions in the reactor

Question 31

Moderator

Answer 31

Slows down fast moving neutrons

Question 32

Concrete Sheild

Answer 32

Concrete (Up to five metres thick) used to absorb bets particles, gamma rays and neutrons (all ionising radiation)

Question 33

Coolant

Answer 33

Cold coolant enters the reactor and is heated by the energy released from fission reactions. Heated coolant exists in the reactor.

Question 34

Heat Exchanger

Answer 34

Heated coolant from the reactor transfers energy to a secondary coolant (liquid water or steam) inside the heat exchanger.