Radiation recap

Radioisotopes do NOT occur naturally.

• True

• False

Which of these is the most suitable description of background radiation?

• A measure of the level of ionising radiation present in the environment at a particular location

• A measure of how much radiation you absorb

• A measure of radiation that comes from space only

• A measure of radiation that comes from the buildings

In order of most to least penetrating radiation we have

• Alpha , Beta,  Gamma
• Beta , Gamma , Alpha
• Gamma, Beta, Alpha
• Gamma, Alpha, Beta

What type of radiation can be stopped by a piece of paper?

• Alpha radiation
• Beta radiation
• Gamma radiation

What type of radiation can be stopped by a 5 mm piece of aluminium?

• Alpha radiation
• Beta radiation
• gamma radiation

What type of radiation can be stopped by a thick lead sheet?

• Alpha radiation
• Beta radiation
• gamma radiation

_______________ is the process by which unstable atoms emit radiation until they become stable.

• Radiation
• Chemical Reaction
• Radioactive Decay
• Isotopes

Which of these is not a method for safely handling radioactive materials?

• Pointing it away from yourself and others
• Spending as little time as possible with the radiation
• Picking it up using your hands
• Storing in a lead lined container

When does radioactive decay occur?

• When the nucleus of an isotope is unstable
• When the nucleus of an isotope is stable
• When the electrons of an isotope are spinning
• When the electrons of an isotope are shared with another isotope

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons