Unit 2 Test Review

Which device would you use to measure the amount of radiation in an area?

• Geiger Counter
• scale
• reactor
• scanner

Half-life is the

• the amount of time it takes for half the atoms to reproduce
• the amount of time it takes for all the atom to decay
• the amount of time it takes for half the atom to decay

An alpha particle can be stopped by

• lead
• paper
• a stop sign
• aluminum

A beta particle can be stopped by

• nothing
• paper
• aluminum
• lead

Gamma rays can pass through everything except

• lead
• paper
• your head
• aluminum

An alpha particle is a(n)

• electron
• rays
• Helium atom (with electrons)
• Helium atom (without electrons)

A beta particle is

• an Helium atom
• a ray
• an electron
• all of the above

The best location to store nuclear waste is 

• in a sparse location
  
• away from earthquake activity
  
• far away from ground water
• all of the above
  

Medical applications for radiation include

• cancer treatment
  
• treatment for broken bones
  
• thryoid treatment
• all of the above
  

Nuclear power plants use

• fusion
• fission
• fission and fusion
• none of the above