True or False: All openings to the outside must be closed when conducting a short-term radon test.

When conducting a short-term radon test, it is important to understand the impact of outside air and how it influences indoor radon levels. It is not necessary for all openings to the outside to be closed during a short-term test. In fact, certain guidelines recommend maintaining typical living conditions, which may include having some windows or doors slightly open to allow for air circulation and normal ventilation patterns in the home.

The reason for this is that sealing the house completely can create an artificial environment that may not accurately reflect the home's normal radon levels. Therefore, while it's important to minimize drastic ventilation changes or heavy drafts that could skew results during the testing period, the complete closure of all openings is not a requirement. This balance allows for more realistic and relevant data regarding radon exposures in residential environments.