Radon Measurement Professional Exam
(InterNACHI and AARST) Questions With
Correct Answers
A _____ refers to the series of transformations that a given radionuclide
| | | | | | | | | | | |
will undergo, as well as the kind of radiation it emits, which are
| | | | | | | | | | | | |
characteristic of the radionuclide - CORRECT ANSWER✔✔-decay chain
| | | | | | |
_____ are the extremely small particles of which we, and everything
| | | | | | | | | | |
around us, are made. - CORRECT ANSWER✔✔-atoms
| | | | | |
If one atom were the size of the Houston Astrodome, its nucleus would
| | | | | | | | | | | | |
be roughly the size of a _____. - CORRECT ANSWER✔✔-pea
| | | | | | | | |
T/F: The balance of the forces in the nucleus of an atom determines
| | | | | | | | | | | | |
whether a nucleus is stable or unstable (radioactive). - CORRECT
| | | | | | | | | |
ANSWER✔✔-true
As an unstable nucleus emits radiation as it disintegrates, the
| | | | | | | | | |
radionuclide transforms to different nuclides, and this process is called
| | | | | | | | | |
_____. - CORRECT ANSWER✔✔-radioactive decay
| | | |
,_____ is the energy that is released as particles or rays during
| | | | | | | | | | | |
radioactive decay. - CORRECT ANSWER✔✔-radiation
| | | |
_____ particles include two protons and two neutrons. - CORRECT
| | | | | | | | | |
ANSWER✔✔-alpha
We're really concerned with the _____ particles, because they can be
| | | | | | | | | | |
stopped by a sheet of paper where they release their energy. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-alpha
|
Some decay products of radon emit beta particles, but its alpha-emitting
| | | | | | | | | |
decay products pose a much _____ health risk. - CORRECT
| | | | | | | | | | |
ANSWER✔✔-greater
_____ photons can pass through many kinds of materials, including
| | | | | | | | | |
human tissue. - CORRECT ANSWER✔✔-gamma
| | | |
_____ are the source of cell damage in the lungs. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-RDPs (radon decay products) | | |
T/F: Radon gas tastes like sulphur. - CORRECT ANSWER✔✔-false
| | | | | | | |
T/F: If RDPs plate out on a wall, they are a hazard. - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-false
,If the radon concentration is 75 pCi/L, and the decay-product
| | | | | | | | | |
concentration is 0.3 WL, the equilibrium ratio would be calculated as
| | | | | | | | | | |
follows: ER = (0.3) x (100) / 75 = _____. - CORRECT ANSWER✔✔-0.4
| | | | | | | | | | | |
The average indoor radon level is _____ pCi/L. - CORRECT ANSWER✔✔-
| | | | | | | | | |
1.3
If a gallon container held air with 4 pCi/L, there would be about 4
| | | | | | | | | | | | | |
(quarts per gallon) multiplied by 4 (pCi/L) multiplied by 2.22
| | | | | | | | | |
disintegrations per minutes, or about _____ disintegrations per minutes
| | | | | | | | |
of radon atoms in the container. - CORRECT ANSWER✔✔-35.2
| | | | | | | |
Radon is the _____ most important cause of lung cancer after smoking
| | | | | | | | | | | |
in many countries. - CORRECT ANSWER✔✔-2nd
| | | | |
T/F: The World Health Organization (WHO) says radon causes up to 15%
| | | | | | | | | | | |
of lung cancers worldwide. - CORRECT ANSWER✔✔-true
| | | | | |
T/F: There exists a known threshold concentration below which radon
| | | | | | | | | |
exposure presents no risk. - CORRECT ANSWER✔✔-false
| | | | | |
, T/F: Since alpha particles are more massive and more highly charged
| | | | | | | | | | |
than other types of ionizing radiation, they are more damaging to living
| | | | | | | | | | | |
tissue. - CORRECT ANSWER✔✔-true
| | |
T/F: Evidence exists that shows a threshold of exposure below which
| | | | | | | | | | |
radon levels are harmless. - CORRECT ANSWER✔✔-false
| | | | | |
T/F: Radon is a known human lung carcinogen and is the largest source
| | | | | | | | | | | | |
of radiation exposure and risk to the general public. - CORRECT
| | | | | | | | | | |
ANSWER✔✔-true
A difference in _____ between the basement or crawlspace and the
| | | | | | | | | | |
surrounding soil draws radon into the home. - CORRECT ANSWER✔✔-
| | | | | | | | |
air pressure|
The objective of a sub-slab or sub-membrane depressurization system is
| | | | | | | | |
to create a _____ beneath the foundation, which is greater in strength
| | | | | | | | | | | | |
than the vacuum imposed on the soil by the house itself. - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-vacuum
T/F: Radon gas is approximately seven times heavier than air. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-true
(InterNACHI and AARST) Questions With
Correct Answers
A _____ refers to the series of transformations that a given radionuclide
| | | | | | | | | | | |
will undergo, as well as the kind of radiation it emits, which are
| | | | | | | | | | | | |
characteristic of the radionuclide - CORRECT ANSWER✔✔-decay chain
| | | | | | |
_____ are the extremely small particles of which we, and everything
| | | | | | | | | | |
around us, are made. - CORRECT ANSWER✔✔-atoms
| | | | | |
If one atom were the size of the Houston Astrodome, its nucleus would
| | | | | | | | | | | | |
be roughly the size of a _____. - CORRECT ANSWER✔✔-pea
| | | | | | | | |
T/F: The balance of the forces in the nucleus of an atom determines
| | | | | | | | | | | | |
whether a nucleus is stable or unstable (radioactive). - CORRECT
| | | | | | | | | |
ANSWER✔✔-true
As an unstable nucleus emits radiation as it disintegrates, the
| | | | | | | | | |
radionuclide transforms to different nuclides, and this process is called
| | | | | | | | | |
_____. - CORRECT ANSWER✔✔-radioactive decay
| | | |
,_____ is the energy that is released as particles or rays during
| | | | | | | | | | | |
radioactive decay. - CORRECT ANSWER✔✔-radiation
| | | |
_____ particles include two protons and two neutrons. - CORRECT
| | | | | | | | | |
ANSWER✔✔-alpha
We're really concerned with the _____ particles, because they can be
| | | | | | | | | | |
stopped by a sheet of paper where they release their energy. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-alpha
|
Some decay products of radon emit beta particles, but its alpha-emitting
| | | | | | | | | |
decay products pose a much _____ health risk. - CORRECT
| | | | | | | | | | |
ANSWER✔✔-greater
_____ photons can pass through many kinds of materials, including
| | | | | | | | | |
human tissue. - CORRECT ANSWER✔✔-gamma
| | | |
_____ are the source of cell damage in the lungs. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-RDPs (radon decay products) | | |
T/F: Radon gas tastes like sulphur. - CORRECT ANSWER✔✔-false
| | | | | | | |
T/F: If RDPs plate out on a wall, they are a hazard. - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-false
,If the radon concentration is 75 pCi/L, and the decay-product
| | | | | | | | | |
concentration is 0.3 WL, the equilibrium ratio would be calculated as
| | | | | | | | | | |
follows: ER = (0.3) x (100) / 75 = _____. - CORRECT ANSWER✔✔-0.4
| | | | | | | | | | | |
The average indoor radon level is _____ pCi/L. - CORRECT ANSWER✔✔-
| | | | | | | | | |
1.3
If a gallon container held air with 4 pCi/L, there would be about 4
| | | | | | | | | | | | | |
(quarts per gallon) multiplied by 4 (pCi/L) multiplied by 2.22
| | | | | | | | | |
disintegrations per minutes, or about _____ disintegrations per minutes
| | | | | | | | |
of radon atoms in the container. - CORRECT ANSWER✔✔-35.2
| | | | | | | |
Radon is the _____ most important cause of lung cancer after smoking
| | | | | | | | | | | |
in many countries. - CORRECT ANSWER✔✔-2nd
| | | | |
T/F: The World Health Organization (WHO) says radon causes up to 15%
| | | | | | | | | | | |
of lung cancers worldwide. - CORRECT ANSWER✔✔-true
| | | | | |
T/F: There exists a known threshold concentration below which radon
| | | | | | | | | |
exposure presents no risk. - CORRECT ANSWER✔✔-false
| | | | | |
, T/F: Since alpha particles are more massive and more highly charged
| | | | | | | | | | |
than other types of ionizing radiation, they are more damaging to living
| | | | | | | | | | | |
tissue. - CORRECT ANSWER✔✔-true
| | |
T/F: Evidence exists that shows a threshold of exposure below which
| | | | | | | | | | |
radon levels are harmless. - CORRECT ANSWER✔✔-false
| | | | | |
T/F: Radon is a known human lung carcinogen and is the largest source
| | | | | | | | | | | | |
of radiation exposure and risk to the general public. - CORRECT
| | | | | | | | | | |
ANSWER✔✔-true
A difference in _____ between the basement or crawlspace and the
| | | | | | | | | | |
surrounding soil draws radon into the home. - CORRECT ANSWER✔✔-
| | | | | | | | |
air pressure|
The objective of a sub-slab or sub-membrane depressurization system is
| | | | | | | | |
to create a _____ beneath the foundation, which is greater in strength
| | | | | | | | | | | | |
than the vacuum imposed on the soil by the house itself. - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-vacuum
T/F: Radon gas is approximately seven times heavier than air. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-true
