The two basic kinds of radon testing devices are which?

The two basic kinds of radon testing devices are which?

• A. Passive and Active
• B. Digital and Analog
• C. Short-term and Long-term
• D. Indoor and Outdoor

Answer: (A)

The main idea is how radon testing devices measure exposure based on how they sample air and operate. Passive devices rely on natural diffusion and do not require power or pumping; they collect radon over a set exposure period and are typically used for longer-term assessments. Active devices, on the other hand, use a pump and electronics to draw air through a detector and provide ongoing measurements, often in real time. So the two basic kinds are passive and active. The other options describe duration, digital vs analog, or indoor vs outdoor placement, none of which define how the device actually operates to measure radon.

The main idea is how radon testing devices measure exposure based on how they sample air and operate. Passive devices rely on natural diffusion and do not require power or pumping; they collect radon over a set exposure period and are typically used for longer-term assessments. Active devices, on the other hand, use a pump and electronics to draw air through a detector and provide ongoing measurements, often in real time. So the two basic kinds are passive and active. The other options describe duration, digital vs analog, or indoor vs outdoor placement, none of which define how the device actually operates to measure radon.