Nuclear Engineering Principles 8

What are the SI units for radioactivity?

• Curies (Ci)
• Gray (Gy)
• Sievert (Sv)
• Becquerel (Bq)

What are the SI units for absorbed dose?

• Sievert (Sv)

• Gray (Gy)

• Joule (J)

• Curie (Ci)

What are the SI units for equivalent dose?

• gray (Gy)
• sievert (Sv)
• curie (Ci)
• becquerel (Bq)

How many Sieverts is 1 Gray of alpha particles?

• 5 Sv
• 10 Sv
• 1 Sv

• 20 Sv

Where does most radiation exposure come from?

• Natural sources

• Fallout from nuclear weapons testing

• Nuclear power plants

• Medical procedures

Which of these are sources of naturally occurring background radiation? (select all that apply)

• Bananas

• Rocks

• Cosmic rays

• Radon

Where are the highest levels of background radiation in the world?

• Brazil

• Pripyat

• Japan

• USA

Which of these is a stochastic effect?

• Cancer

• Radiation sickness

• Radiation burns

• Thyroiditis

What is the annual radiation dose limit for a member of the public?

• 1 mSv per year
• 5 mSv per year
• 0.1 mSv per year
• 10 mSv per year

Which of these can reduce radiation exposure? (select all that apply)

• Limit the time spent using sources

• Increase the distance from sources

• Use shielding

• Keep sources contained when not in use