N5 Radiation Revision Quiz

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

• 1.0 mSv

• 2.2 mSv

• 20 mSv

• 70 kBq

What is ionisation?

• The loss or gain of electrons from a stable atom

• The splitting of an atom

• The fusion of two atoms

• The emission of radiation

Which type of ionising radiation has the heaviest mass?

• Alpha

• Beta

• Gamma

• Delta

What is the half-life of Francium if the initial activity is 20 MBq and after 24 days the activity is 2.5 MBq?

• 8 days

• 12 days

• 16 days

• 24 days

How does the speed of gamma rays compare to the speed of light?

• Identical

• Slower

• Faster

• Variable

Which type of ionising radiation is mostly absorbed by paper or skin?

• Alpha

• Beta

• Gamma

• Delta

What is the main source of background radiation from buildings?

• Granite

• Wood

• Concrete

• Steel

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

• 1.0 mSv

• 2.2 mSv

• 20 mSv

• 70 kBq

What does the symbol "D" represent in the context of radiation dosage?

• Energy received (J)

• Absorbed dose (Gy)

• Mass of tissue (kg)

• Radiation weighting factor

What is the main difference between fission and fusion?

• Fission combines nuclei, fusion splits them

• Fission splits nuclei, fusion combines them

• Both fission and fusion split nuclei

• Both fission and fusion combine nuclei