Alpha beta and gamma. Radiation range in air

Question 1

What is an alpha particle

Answer 1

Helium nucleus

Question 2

What is the charge of an alpha particle

Answer 2

2+ since 4He
2

Question 3

What are alpha particles created by

Answer 3

alpha decay of an unstable radio-isotope

Question 4

What are beta particles

Answer 4

electrons

Question 5

What is the charge of beta

Answer 5

-1

Question 6

What is beta particles created from

Answer 6

beta decay

Question 7

What is gamma

Answer 7

an electromagnetic wave but also like a photon

Question 8

What is gamma created from

Answer 8

an unstable nucleus emits it in form of energy after alpha/beta decay

Question 9

What is range of alpha radiation in air

Answer 9

1-3cm

Question 10

What is range of beta radiation in air

Answer 10

10-30cm

Question 11

What is range of gamma radiation in air

Answer 11

100km

Question 12

What makes alpha radiation not travel far

Answer 12

highly ionising so many collision per mm with air molecules

Question 13

What is beta ionisation like compared to alpha and gamma

Answer 13

weaker ionsing than alpha but more than gamma

Question 14

What material will absorb each material

Answer 14

alpha - paper
beta - aluminium 3mm
gamma - several cm lead