Radiation Flashcards Preview

Physics Nat 5 radiation > Radiation > Flashcards

Flashcards in Radiation Deck (11)
Loading flashcards...
1

What is the meaning of fission?

Fission is the division or splitting of two or more parts.

2

What is a beta particle?

A fast moving electron

3

What is an alpha particle?

An alpha particle is a helium nucleus with 2 protons and 2 neutrons.

4

What is ionisation?

Ionisation is the gain or the loss of an electron.

5

What are 2 safety precaution when handling radiation?

Don’t put the radiation close to your eyes
Reduce time exposure to the source

6

What is the most ionising radiation in order?

Alpha 1 beta 2 gamma 3

7

What is the formula for activity ?

A=N/t

8

What type of nuclear reaction takes place in a nuclear power
station’ s reactor?

Fission

9

State two factors that can affect the background radiation level?

Radon gas
Cosmic Rays

10

What is meant by the radiations weighting factor (Wr)?

The radiation weighting factor (Wr) indicates the ability of a particular type of radiation to cause damage to a living tissue.

11

What is the formula for absorbed dose?

D=E/m