Question

the prevailing winds in the region shown below blow over the sea, then up and over a coastal mountain. which geographic area is likely to experience the most precipitation? choose 1 answer: a ⅰ b ⅱ c ⅲ d ⅳ

Explanation:

Step1: Understand orographic precipitation

When moist air (from the sea in this case) is forced to rise over a mountain (coastal mountain here), it cools. As it cools, the moisture condenses and precipitates. The area on the wind - ward side (the side where the wind is coming from) gets more precipitation.

Step2: Analyze each region

• Region I: Over the sea. The air is picking up moisture but not yet precipitating.
• Region II: On the wind - ward side but lower on the mountain. The air is still rising and condensing, but not at the peak of condensation.
• Region III: At the higher part of the wind - ward side. This is where the air has risen enough, cooled enough, and maximum condensation (and thus precipitation) occurs.
• Region IV: On the leeward side (opposite side of the wind). The air has already precipitated on the wind - ward side and is descending and warming (adiabatic warming), leading to less precipitation.

Answer:

C. III