Topic 5 Flashcards
1
Q
isotopes are
A
different forms of the same element
2
Q
radioactivity is a …… process
A
random
3
Q
alpha beta and gamma radiation can
A
cause ionisation
4
Q
alpha particles are
A
helium nuclei
5
Q
alpha particles are made of
A
two protons and two neutrons
6
Q
alpha particles have
A
a strong positive charge and are big= strongly ionising
7
Q
alpha particles penetrate
A
not very far
8
Q
beta particle are
A
electrons emitted from a nucleus
9
Q
beta have
A
negative charge, are smaller than alph
10
Q
beta are moderately
A
ioninsing
11
Q
beta penetrate moderately
A
far
12
Q
gamma rays are
A
a type of electromagnetic radiation
13
Q
gamma rays are weakly
A
ionising
14
Q
gamma rays can penetrate
A
a long way into materials
15
Q
paper, thin aluminium, thick lead
A
alpha, beta, gamma
