RADON EXAM TEST PAPER UPDATED STUDY QUESTIONS
AND ANSWERS GRADED A+
✔✔A person who smokes is _____ times more likely to contract lung cancer from radon
- ✔✔15
✔✔4 factors that influence the strength of the Radon source in the soil - ✔✔1. Radium
content of the soil
2. Size of the soil particles
3. Permeability of the soil
4. Forces pushing and pulling through the soil
✔✔4 driving forces responsible for Radon entry - ✔✔1. Air pressure differentials
2. Diffusion
3. Emanation
4. Well Water
✔✔Which driving force is responsible for the greatest amount of radon entry? - ✔✔Air
pressure differentials
✔✔What driving force is associated with the stack effect? - ✔✔Temperature differences
✔✔What driving force is associated with diffusion? - ✔✔Concentration differences
✔✔Radon and Radon decay product measurements that are permitted to be used for
real estate testing and yield a single average reading over a period of time. - ✔✔Time
Integrated Measurements
✔✔Radon and Radon decay product measurements that are taken over a few seconds
or minutes and are allowed to reach secular equilibrium and are counted for at least 10
minutes. - ✔✔Grab Measurements
✔✔Radon and Radon decay product measurements that show the average radon
concentration and hourly trends. - ✔✔Continuous measurements
✔✔Radon and Radon decay products that are taken over a few seconds or minutes and
are immediately counted. - ✔✔Sniffing measurements
✔✔How long should closed house conditions be maintained prior to a short-term test
lasting less than 4 days? - ✔✔12 hours prior to initial testing
, ✔✔For s short-term test lasting less than 7 days how long should closed house
conditions be maintained? - ✔✔They do not need to be maintained prior to initiating
testing.
✔✔What is the minimum distance a radon detector should be placed from the floor? -
✔✔20 inches or almost 2 feet
✔✔What is the minimum distance a radon detector should be placed from any object
other than the floor, exterior wall, or opening to outdoors? - ✔✔4 inches
✔✔What is the minimum distance a radon detector should be placed from an outside
wall without an opening? - ✔✔1 foot
✔✔What is the minimum distance a radon detector should be placed from an opening to
the outside? - ✔✔3 feet
✔✔An initial short-term measurement followed by a long-term measurement if the first
test yielded results between 4 and 10 pCi/L is an appropriate measurement option for....
- ✔✔homeowners interested in their own exposure to radon
✔✔An initial short-term measurement followed by a second short-term measurement
regardless of the results of the first measurement is an option available to..... - ✔✔be
used during a real estate transaction that is known as the "sequential option"
✔✔Two short term measurements conducted simultaneously and placed 4 inches apart
is known as... - ✔✔the simultaneous option and is available to be used during a real
estate transaction
✔✔What quality assurance criteria should a simultaneous measurement during a real
estate transaction meet if one test was 3.0 and the other was 5.9? - ✔✔The higher
measurement must be less than twice the lower measurement.
✔✔What quality assurance criteria should be met when using the simultaneous option
during a real estate transaction where the radon measurements were 5.2 and 7.9? -
✔✔a RPD of less than 36%
✔✔What quality assurance criteria should be met when using the simultaneous option
during a real estate transaction where the radon measurements were 1.5 and 2.2? -
✔✔an RPD of less than 67%
✔✔When should post mitigation measurements begin? - ✔✔24 hours after the
mitigation system becomes operational
AND ANSWERS GRADED A+
✔✔A person who smokes is _____ times more likely to contract lung cancer from radon
- ✔✔15
✔✔4 factors that influence the strength of the Radon source in the soil - ✔✔1. Radium
content of the soil
2. Size of the soil particles
3. Permeability of the soil
4. Forces pushing and pulling through the soil
✔✔4 driving forces responsible for Radon entry - ✔✔1. Air pressure differentials
2. Diffusion
3. Emanation
4. Well Water
✔✔Which driving force is responsible for the greatest amount of radon entry? - ✔✔Air
pressure differentials
✔✔What driving force is associated with the stack effect? - ✔✔Temperature differences
✔✔What driving force is associated with diffusion? - ✔✔Concentration differences
✔✔Radon and Radon decay product measurements that are permitted to be used for
real estate testing and yield a single average reading over a period of time. - ✔✔Time
Integrated Measurements
✔✔Radon and Radon decay product measurements that are taken over a few seconds
or minutes and are allowed to reach secular equilibrium and are counted for at least 10
minutes. - ✔✔Grab Measurements
✔✔Radon and Radon decay product measurements that show the average radon
concentration and hourly trends. - ✔✔Continuous measurements
✔✔Radon and Radon decay products that are taken over a few seconds or minutes and
are immediately counted. - ✔✔Sniffing measurements
✔✔How long should closed house conditions be maintained prior to a short-term test
lasting less than 4 days? - ✔✔12 hours prior to initial testing
, ✔✔For s short-term test lasting less than 7 days how long should closed house
conditions be maintained? - ✔✔They do not need to be maintained prior to initiating
testing.
✔✔What is the minimum distance a radon detector should be placed from the floor? -
✔✔20 inches or almost 2 feet
✔✔What is the minimum distance a radon detector should be placed from any object
other than the floor, exterior wall, or opening to outdoors? - ✔✔4 inches
✔✔What is the minimum distance a radon detector should be placed from an outside
wall without an opening? - ✔✔1 foot
✔✔What is the minimum distance a radon detector should be placed from an opening to
the outside? - ✔✔3 feet
✔✔An initial short-term measurement followed by a long-term measurement if the first
test yielded results between 4 and 10 pCi/L is an appropriate measurement option for....
- ✔✔homeowners interested in their own exposure to radon
✔✔An initial short-term measurement followed by a second short-term measurement
regardless of the results of the first measurement is an option available to..... - ✔✔be
used during a real estate transaction that is known as the "sequential option"
✔✔Two short term measurements conducted simultaneously and placed 4 inches apart
is known as... - ✔✔the simultaneous option and is available to be used during a real
estate transaction
✔✔What quality assurance criteria should a simultaneous measurement during a real
estate transaction meet if one test was 3.0 and the other was 5.9? - ✔✔The higher
measurement must be less than twice the lower measurement.
✔✔What quality assurance criteria should be met when using the simultaneous option
during a real estate transaction where the radon measurements were 5.2 and 7.9? -
✔✔a RPD of less than 36%
✔✔What quality assurance criteria should be met when using the simultaneous option
during a real estate transaction where the radon measurements were 1.5 and 2.2? -
✔✔an RPD of less than 67%
✔✔When should post mitigation measurements begin? - ✔✔24 hours after the
mitigation system becomes operational
