NJ RADON MEASUREMENT TECHNICIAN EXAM PRACTICE QUESTIONS
QUESTIONS AND ANSWERS
What does it mean for a radon decay product to be "plated out"? - CORRECT ANSWER✅✅It has
attached to a non-breathable object
If a radon decay product attaches to a solid object, such as a wall, it... - CORRECT ANSWER✅✅...can no
longer be inhaled.
What is a half-life? - CORRECT ANSWER✅✅The time required for half of the atoms of a radioactive
element to decay.
Which type of radiation is responsible for the most cellular damage associated with radon and radon
decay products? - CORRECT ANSWER✅✅Alpha
The negatively charged subatomic particle that orbits the nucleus is called a(n) - CORRECT
ANSWER✅✅electron
Radon decay products that are not attached to airborne particles are much more likely to... - CORRECT
ANSWER✅✅deposit radiation into lung tissue if inhaled.
The number of protons plus the number of neutrons in a specific atom is called - CORRECT
ANSWER✅✅Mass number
The number of protons in an atom's nucleus is the same as the atom's... - CORRECT ANSWER✅✅Atomic
number
The commonly assumed equilibrium ratio of radon decay products is: - CORRECT ANSWER✅✅0.4
All atoms of the same element must have the same... - CORRECT ANSWER✅✅Atomic number
,The number of ______________ in an atom determines which element it is. - CORRECT
ANSWER✅✅Protons
_________________ causes a neutral atom to become an ion. - CORRECT ANSWER✅✅The gain or loss
of electrons
________________ is a unit used to measure radon concentration. - CORRECT ANSWER✅✅Picocurie
per liter (pCi/L)
When ___________ decays, it produces Radon-222 - CORRECT ANSWER✅✅Radium-226
For an atom to be neutrally charged... - CORRECT ANSWER✅✅it's number of protons and electrons
must be equal.
Different atoms of the same element can have differing numbers of neutrons. What are these different
kinds of the same element called? - CORRECT ANSWER✅✅isotopes
What is the half-life of radon-222? - CORRECT ANSWER✅✅3.8 days
Stack effect is caused by... - CORRECT ANSWER✅✅Temperature differentials
3 factors that effect radon's ability to move through the soil: - CORRECT ANSWER✅✅1. Size of mineral
grain in the soil
2. Dryness of the soil
3. Permeability of the soil
(T/F) There is a strong correlation between low ventilation rates and high radon levels. - CORRECT
ANSWER✅✅False: there is not a strong correlation
(T/F) Radon entry, and therefore indoor radon concentrations, do not vary over relatively short periods
of time. - CORRECT ANSWER✅✅FALSE: they do vary over relatively short periods of time.
, All of the following are driving forces that can bring radon into a home except:
- Diffusion
- Evaporation
- Emanation
- Well water - CORRECT ANSWER✅✅Evaporation
The area below the neutral pressure plane in a home... - CORRECT ANSWER✅✅Draws air into the home
The 3 major factors of radon entry into a home are: - CORRECT ANSWER✅✅- Radon source strength
- Transport of radon
- ventilation rate
Radon plays what role in the average American's annual radiation exposure? - CORRECT ANSWER✅✅It
is the 2nd greatest contributor.
The EPA estimates that the risk of lung cancer death for a current smoker with a constant radon
exposure of 4 pCi/L is _____________ in 1,000. - CORRECT ANSWER✅✅62
The EPA estimates that approximately ____________ lung cancer deaths per year are related to
inhalation of radon and radon decay products. - CORRECT ANSWER✅✅21,000
____________ and _____________ are the two radon decay products that contribute the largest dose
of radiation associated with RDPs. - CORRECT ANSWER✅✅Polonium-218 and polonium-214
Which of the following effects is NOT caused by ionizing radiation?
- Breaking DNA strands
- Unbonding base pairs
- Creation of additional nuclei
QUESTIONS AND ANSWERS
What does it mean for a radon decay product to be "plated out"? - CORRECT ANSWER✅✅It has
attached to a non-breathable object
If a radon decay product attaches to a solid object, such as a wall, it... - CORRECT ANSWER✅✅...can no
longer be inhaled.
What is a half-life? - CORRECT ANSWER✅✅The time required for half of the atoms of a radioactive
element to decay.
Which type of radiation is responsible for the most cellular damage associated with radon and radon
decay products? - CORRECT ANSWER✅✅Alpha
The negatively charged subatomic particle that orbits the nucleus is called a(n) - CORRECT
ANSWER✅✅electron
Radon decay products that are not attached to airborne particles are much more likely to... - CORRECT
ANSWER✅✅deposit radiation into lung tissue if inhaled.
The number of protons plus the number of neutrons in a specific atom is called - CORRECT
ANSWER✅✅Mass number
The number of protons in an atom's nucleus is the same as the atom's... - CORRECT ANSWER✅✅Atomic
number
The commonly assumed equilibrium ratio of radon decay products is: - CORRECT ANSWER✅✅0.4
All atoms of the same element must have the same... - CORRECT ANSWER✅✅Atomic number
,The number of ______________ in an atom determines which element it is. - CORRECT
ANSWER✅✅Protons
_________________ causes a neutral atom to become an ion. - CORRECT ANSWER✅✅The gain or loss
of electrons
________________ is a unit used to measure radon concentration. - CORRECT ANSWER✅✅Picocurie
per liter (pCi/L)
When ___________ decays, it produces Radon-222 - CORRECT ANSWER✅✅Radium-226
For an atom to be neutrally charged... - CORRECT ANSWER✅✅it's number of protons and electrons
must be equal.
Different atoms of the same element can have differing numbers of neutrons. What are these different
kinds of the same element called? - CORRECT ANSWER✅✅isotopes
What is the half-life of radon-222? - CORRECT ANSWER✅✅3.8 days
Stack effect is caused by... - CORRECT ANSWER✅✅Temperature differentials
3 factors that effect radon's ability to move through the soil: - CORRECT ANSWER✅✅1. Size of mineral
grain in the soil
2. Dryness of the soil
3. Permeability of the soil
(T/F) There is a strong correlation between low ventilation rates and high radon levels. - CORRECT
ANSWER✅✅False: there is not a strong correlation
(T/F) Radon entry, and therefore indoor radon concentrations, do not vary over relatively short periods
of time. - CORRECT ANSWER✅✅FALSE: they do vary over relatively short periods of time.
, All of the following are driving forces that can bring radon into a home except:
- Diffusion
- Evaporation
- Emanation
- Well water - CORRECT ANSWER✅✅Evaporation
The area below the neutral pressure plane in a home... - CORRECT ANSWER✅✅Draws air into the home
The 3 major factors of radon entry into a home are: - CORRECT ANSWER✅✅- Radon source strength
- Transport of radon
- ventilation rate
Radon plays what role in the average American's annual radiation exposure? - CORRECT ANSWER✅✅It
is the 2nd greatest contributor.
The EPA estimates that the risk of lung cancer death for a current smoker with a constant radon
exposure of 4 pCi/L is _____________ in 1,000. - CORRECT ANSWER✅✅62
The EPA estimates that approximately ____________ lung cancer deaths per year are related to
inhalation of radon and radon decay products. - CORRECT ANSWER✅✅21,000
____________ and _____________ are the two radon decay products that contribute the largest dose
of radiation associated with RDPs. - CORRECT ANSWER✅✅Polonium-218 and polonium-214
Which of the following effects is NOT caused by ionizing radiation?
- Breaking DNA strands
- Unbonding base pairs
- Creation of additional nuclei
