Fission and Fusion

_________ is the process of splitting a large nucleus into smaller more stable nuclei and neutrons.

• fission

• fusion

• decomposition

• combination

Which of the following is an example of an uncontrolled nuclear fission chain reaction?

• navy ships

• nuclear power plants

• nuclear bombs

Which of the following elements is a good choice for a fission reaction?

• uranium

• plutonium

• neither

• both

Fission reactions produce ________ energy when compared to chemical reactions (like burning coal).

• less

• more

• the same amount of

• sometimes more and sometimes less

The image represents a _______ reaction.

• fission

• fusion

• half life

• gamma decay

When an uncontrolled chain reaction occurs the number of fission reactions will ________.

• decrease

• increase

• remain the same

• sometimes increase and sometimes decrease

A fission reaction is started by a ________ being fired and absorbed by a large nucleus.

• proton

• electron

• positron

• neutron

Which of the following is one disadvantage of using nuclear power plants?

• produces less pollution

• produces lots of energy

• creates radioactive waste

• reliable and cost effective once up and running

________ is the combining (joining) of two small nuclei to create a large nucleus.

• fission

• decomposition

• fusion

• combination

Where do fusion reactions naturally occur in our solar system?

• In the far outer reaches of the Oort Cloud.

• In the atmosphere on Earth.

• In the Sun's Core

• In reactors on Earth.