List four primary ways clouds form and describe the formation of one cloud type by each method. Mountains force air up causing lenticular and cumulus type of clouds called orographic clouds. Convergence of air at surface causes air to rise, cool and condense into cumulus type clouds. Warm fronts lift air gradually, causing stratus and cirrus type clouds. Cold fronts lift air rapidly causing cumulonimbus types .
Clouds form in same place over an area though air is rushing through the spot.
Waves of the air are caused as air is forced over mountains.