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. Short-term and Long-term
• C. Digital and Analog
• D. Indoor and Outdoor

Answer: (A)

Radon testing devices are categorized by how they collect data. The two basic kinds are passive and active. Passive devices don’t require power and rely on diffusion to trap radon on a detector over a defined exposure period, giving an averaged concentration that’s useful for long-term monitoring or for simple, inexpensive testing. Active devices use a pump or other power source to move air through a detector, providing continuous or near-real-time measurements and quicker results, which is helpful for short-term testing or when timely information is needed. The other pairings describe duration, display type, or environment rather than how the device operates, so they don’t define the fundamental kinds of radon testing devices.

Radon testing devices are categorized by how they collect data. The two basic kinds are passive and active. Passive devices don’t require power and rely on diffusion to trap radon on a detector over a defined exposure period, giving an averaged concentration that’s useful for long-term monitoring or for simple, inexpensive testing. Active devices use a pump or other power source to move air through a detector, providing continuous or near-real-time measurements and quicker results, which is helpful for short-term testing or when timely information is needed. The other pairings describe duration, display type, or environment rather than how the device operates, so they don’t define the fundamental kinds of radon testing devices.