21.   The rising air currents caused moist air to cool, resulting in clouds and rain.

22.   These winds arise when air at high elevations rapidly cools as the sun lowers in the sky in the evening.

23.   This develops when the air cools in the evening and the moisture in the air condenses into fog.

24.   This moving air cools the attic in the summer and helps to prevent ice dams in the winter.