RAD320 Week 1

Ionization is the removal of a(n) _________________ from an atom.

• neutron

• 
  proton

• electron

• atom

Which type of energy is the energy released by a chemical reaction?

• Kinetic energy

• Thermal energy

• Chemical energy

• Nuclear energy

____________ is the transfer of energy.

• Radiation

• Heat

• Potential energy

• Ionization

Natural environmental radiation includes which of the following?

• Cosmic rays

• 
  Radon

• Terrestrial radiation

• All of the options

Which of the following is the largest source of natural environmental radiation?

• X-rays

• 
  Cosmic rays

• Radon

• Internally deposited radionuclides

Which of the following is the largest source of human-made radiation?

• Radon

• Internally deposited radionuclides

• Cosmic rays

• 
  X-rays

What percentage of our annual average radiation dose is attributable to medical imaging?

• 
  73%

• 33%

• 25%

• 48%

X-rays are ______________ penetrating, invisible rays that are a form of _____________ radiation.

• highly; mechanical

• slightly; mechanical

• highly; electromagnetic

• slightly; electromagnetic

Convert 4/1000 to a fraction.

• 0.004

• 0.4

• 0.00004

• 0.0004

6.849 × 10³

• 6.849 × 10²

• 684.9 × 10²

• 6.849 × 10³

• 
  68.49 × 10³