P2.5 Radioactivity Flashcards
1
Q
What’s irradiated?
A
Hit by radiation
2
Q
What’s is contamination?
A
Radioactive thing on or in you
3
Q
What is radiation?
A
From nucleus
Random
Can’t be stopped
4
Q
What’s background radiation?
A
Food
Air
Ground
Space
5
Q
What’s alpha?
A
4A2
6
Q
What’s beta?
A
An electron
7
Q
What’s gamma?
A
Electromagnetic wave
8
Q
Uses of alpha?
A
Smoke detectors
9
Q
Uses of beta?
A
Carbon dating
Material thickness
10
Q
Uses of gamma?
A
Tracers
Kill cells
11
Q
Which is most ionising?
A
Alpha
12
Q
What is radiation detected?
A
With a Geiger counter
13
Q
What causes danger?
A
DES
14
Q
What does radiation do in a magnetic field?
A
Gamma nothing
Beta bends right lots
Alpha bends left a bit
15
Q
What did Rutherford prove?
A
The nucleus is positive
