Ionisisng Radiation

Question 1

What can alpha penetrate through and why

Answer 1

Stopped by a piece of paper

As they are big as they are travelling through the air lots of their atoms are knocked off and they become slower .

Question 2

What are beta particles and their characteristics

Answer 2

Electrons - small and negatively charged

Question 3

What stops beta particles and why

Answer 3

Stopped by few centimetres of thin metal sheet this is because they can travel very far but are small so they are easily stopped

Question 4

What are gamma rays and why do they penetrate further then beta particles

Answer 4

Electromagnetic waves this is because they tend to go through materials instead of colliding with atoms

Question 5

What is a alpha particle what is it made up of and its characteristics

Answer 5

Helium particle - 2 protons and 2 neutrons

Big and heavy and also slow moving