Radioactive materials

What is the first thing that comes to mind when most people hear 'radioactive materials'?

• Nuclear reactors

• Power production

• Safety inspections on airplanes

• Luminescent properties

Which is the best-known naturally occurring radioactive element?

• Thorium

• Tritium

• Krypton 85

• Uranium

What is tritium an example of?

• A naturally occurring radioactive element

• 
  A manmade radioactive element

• A radioisotope of Krypton

• A useful isotope in medical procedures

What is Krypton 85 used for?

• 
  Power production

• Safety inspections on airplanes

• Medical procedures

• 
  Industrial processes

What is radium known for?

• Its luminescent properties

• Its use in medical procedures

• Its use in smoke detectors

• Its use in industrial processes

What is potassium 40 used for?

• Safety inspections on airplanes

• 
  Medical procedures

• Industrial processes

• Power production

How do scientists measure the radiation generated by elements?

• In units called becquerels

• In units called thoriums

• In units called tritiums