Radiation

Question 1

Fission and fusion

Answer 1

Fusion: The coming together of two small Nuclei to make a Large nuclei

Fission: The splitting of a large Nucleus into 2 small nuclei and three neutrons

Question 2

Chain reaction

Answer 2

Chain Reaction: A fission reaction leading on to more fission reactions etc

Question 3

Half life

Answer 3

Activity: A=N/t Measured in Becquerels

Question 4

Dosimetery

Answer 4

Absorbed Dose: D=E/m Measured in grays

Equivalent Dose: H=DWr Measured in Sieverts

Question 5

Ionisation

Answer 5

Ionisation is the addition or removal of an electron from an atom

Question 6

Alpha beta gamma

Answer 6

Alpha: Helium Nucleus, Beta: Fast Moving Electron, Gamma: High energy EM Wave

Question 7

Absorbed dose

Answer 7

Absorbed dose=energy/mass

D=E/M

Question 8

Equivalent dose rate

Answer 8

Equivalent dose rate= equivalent dose/time

Ḣ=H/t

Question 9

Alpha

Answer 9

Blocked by few cm of paper

Question 10

Beta

Answer 10

Blocked by fee mm of aluminium

Question 11

Gamma

Answer 11

Blocked by cm of lead

Question 12

Activity

Answer 12

N=A*t. t=N/A

Question 13

Equivalent dose

Answer 13

Measured in sieverts

D=h/wr. (Very small r)

Question 14

Fusion

Answer 14

In nuclear fusion small nuclei will fuse together to form a larger nucleus.This will release energy

Question 15

Film badge

Answer 15

A film badge can indicate amount in f radiation received by the darkness of the film.it can indicate the type of radiation by which window is affected