Beta Particles

Question 1

What are beta particles?

Answer 1

Fast-moving electrons

Question 2

How is a beta particle formed?

2 points

Answer 2

When a neutron in an unstable nucleus is changed into a proton and an electron
The electron is then ejected from the nucleus as a beta particle

Question 3

Are beta particles lighter or heavier than alpha particles?

Answer 3

Beta particles are lighter than alpha particles

Question 4

At what speed do beta particles travel?

Answer 4

Beta particles move faster than alpha particles

Question 5

Why are beta particles faster moving than alpha particles?

Answer 5

Beta particles are lighter than alpha particles

Question 6

What penetrating power do beta particles have?

Answer 6

They have more penetrating power than alpha particles

Question 7

What can be used to stop beta particles from travelling?

Answer 7

5mm of aluminium

Question 8

What is an example of an element that emits beta particles?

Answer 8

Carbon-14

Question 9

What is a use of carbon-14?

Answer 9

It is used in carbon dating of ancient objects

Question 10

Write a note on beta particles.

6 points

Answer 10

They are fast moving electrons
Formed when a neutron in an unstable nucleus is changed into a proton and an electron which is then ejected from the nucleus
Lighter than alpha particles
Faster than alpha particles
More penetrating power than alpha particles
Carbon-14 is used in carbon-dating