RADON TEST SPRUCE PRACTICE TEST 2026
ACTUAL QUESTIONS WITH ANSWERS
GRADED A+
◉ If a radon decay product attaches to a solid object, such as a wall, it.
Answer: .can no longer be inhaled.
◉ What is a half-life? 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? Answer: Alpha
◉ The negatively charged subatomic particle that orbits the nucleus is
called a(n). Answer: electron
◉ Radon decay products that are not attached to airborne particles are
much more likely to. Answer: deposit radiation into lung tissue if
inhaled.
◉ The number of protons plus the number of neutrons in a specific atom
is called. Answer: Mass number
,◉ The number of protons in an atom's nucleus is the same as the atom's.
Answer: Atomic number
◉ The commonly assumed equilibrium ratio of radon decay products is:.
Answer: 0.4
◉ All atoms of the same element must have the same. Answer: Atomic
number
◉ The number of ______________ in an atom determines which
element it is. Answer: Protons
◉ _________________ causes a neutral atom to become an ion.
Answer: The gain or loss of electrons
◉ ________________ is a unit used to measure radon concentration.
Answer: Picocurie per liter (pCi/L)
◉ When ___________ decays, it produces Radon-222. Answer:
Radium-226
◉ For an atom to be neutrally charged. 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?
Answer: isotopes
◉ What is the half-life of radon-222? Answer: 3.8 days
◉ Stack effect is caused by. Answer: Temperature differentials
◉ 3 factors that effect radon's ability to move through the soil:. 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. 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. 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
ACTUAL QUESTIONS WITH ANSWERS
GRADED A+
◉ If a radon decay product attaches to a solid object, such as a wall, it.
Answer: .can no longer be inhaled.
◉ What is a half-life? 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? Answer: Alpha
◉ The negatively charged subatomic particle that orbits the nucleus is
called a(n). Answer: electron
◉ Radon decay products that are not attached to airborne particles are
much more likely to. Answer: deposit radiation into lung tissue if
inhaled.
◉ The number of protons plus the number of neutrons in a specific atom
is called. Answer: Mass number
,◉ The number of protons in an atom's nucleus is the same as the atom's.
Answer: Atomic number
◉ The commonly assumed equilibrium ratio of radon decay products is:.
Answer: 0.4
◉ All atoms of the same element must have the same. Answer: Atomic
number
◉ The number of ______________ in an atom determines which
element it is. Answer: Protons
◉ _________________ causes a neutral atom to become an ion.
Answer: The gain or loss of electrons
◉ ________________ is a unit used to measure radon concentration.
Answer: Picocurie per liter (pCi/L)
◉ When ___________ decays, it produces Radon-222. Answer:
Radium-226
◉ For an atom to be neutrally charged. 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?
Answer: isotopes
◉ What is the half-life of radon-222? Answer: 3.8 days
◉ Stack effect is caused by. Answer: Temperature differentials
◉ 3 factors that effect radon's ability to move through the soil:. 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. 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. 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
