Question

Due to changes in humidity, temperature, and wind speed, isolation distances will always be greater:

(a) During the day.
(b) At night.
(c) In high-humidity conditions.
(d) In low-humidity conditions.

Answer 1

Isolation distances are greater in low-humidity conditions because dry air increases evaporation rates, while high humidity reduces evaporative cooling.

Step-by-step explanation:

The question posed concerns the effect of humidity, temperature, and wind speed on isolation distances. The correct answer is that isolation distances will always be greater in low-humidity conditions. This is because higher humidity leads to reduced evaporation rates due to the decreased difference in water vapor pressure between surfaces (like leaf and atmosphere or skin and atmosphere) and the surrounding air. On level ground, distances might be shorter than in uneven terrain due to variables such as temperature and wind, which also play a role. However, for humidity, the principle remains that dry air facilitates greater evaporation and hence greater cooling, which can affect isolation distances.