Fission and Fusion

The risk of radioactive hazard is greatest in the turbine with following reactor

• pressurized water

• boiling water

• gas cooled

• liquid metal cooled

The splitting of a nucleus into two smaller parts

• fission

• fusion

• radioactive Decay

• transmutation

What is the main type of coolant used in a reactor?

• graphite

• water

• sodium

• uranium

Walls are constructed of ______ to ensure radiation does not escape

• high density concrete with steel shields

• reflective aluminium

• cement walls

• hollow walls separated by a vacuum

How is nuclear fusion 'forced' to occur in a reactor?

• heated to very high temperatures

• exposed to strong magnetic fields

• the particles are projected at close to the speed of light

• nuclear decay of pure elements

The used fuel rods contain 96% of ______

• uranium which can be re-used

• waste

• plutonium

• neutrons

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• decay
• gamma radiation

This happens naturally due to an unstable nucleus.

• fission
• fusion
• radioactive decay
• K-capture

This is an example of...

• Chain reaction

• Fusion reaction

• Decomposition reaction

• Decay

Where does fusion occur naturally?

• Underwater
• All around us
• In the radioactive waste
• On the sun