Radiation

Question 0

Explain BETA.

Answer 0

A single electron, produced when a neutron changes into a proton and an electron.
Fast moving electrons
Tiny negatively charged particles

Question 1

What is ALPHA made up of?

Answer 1

Two protons and two neutrons, equivalent to a helium nuclei
Positively charged
Large particle

Question 2

GAMMA is a…

Answer 2

High energy electromagnetic wave

Question 3

Medical uses of radiation

Answer 3

Radio therapy
Tracers
Sterilisation

Question 4

Explain ionisation

Answer 4

Ionisation is when an atom gains or losses an electron

Question 5

Nuclear fission is…

Answer 5

Is when a large unstable nucleus splits into two smaller nuclei with the realise of several neutrons and energy

Question 6

Fusion is…

Answer 6

Two nuclei combine to form one larger nucleus

Question 7

Paper absorbs-
Aluminium absorbs-
Lead absorbs-

Answer 7

Paper:- alpha
Aluminium:- beta
Lead:- gamma although some gamma is not absorbed

Question 8

What is the equation for equivalent does?

Answer 8

H=DQ

Question 9

The absorbed dose equation is…

Answer 9

D= E/m

Question 10

Activity equation…

Answer 10

A=N/t

Question 11

Absorbed dose unit is the

Answer 11

Grey (Gy)

Question 12

Equivalent dose unit is..

Answer 12

The sievert (Sv)

Question 13

Activity is measured in..

Answer 13

Becquerel (Bq)

Question 14

Name two types of background radiation

Answer 14

Cosmic rays

Radeon gas

Question 15

What is an atom made up of?

Answer 15

6 electrons (negatively charged) 
6 protons (positively charged) 
6 neutrons (no charge)

Question 16

What is activy?

Answer 16

Activity is the number of decaying nuclei per second

Question 17

What is the best ioniser?

Answer 17

Alpha