Nuclear Fission and Fusion

Question 1

Describe what happens in nuclear fission

Answer 1

A neutron is absorbed by an unstable nucleus

This triggers the nucles to split by fission into two daughter nuclei and emit gamma radiation and two to three neutrons

The neutrons are then absorbed by other nuclei which triggers them to split by fission and a chain reaction takes place

Question 2

Describe what happens in nuclear fusion

Answer 2

Two light nuclei join to form a heaveir nucleus
Some of the mass is converted into energy which is released as radiation

Question 3

When is nuclear fission controlled?

Answer 3

It is controlled in a nuclear reactor in nuclear power stations to control the amount of energ yreleased

Question 4

When is nucelar fission uncontrolled

Answer 4

In an explosion caused by a nuclear weapon

Question 5

Do the products of nuclear fission have energy?

Answer 5

Yes

Question 6

Which type of energy do the products of nuclear fission have?

Answer 6

Kinetic energy