AP BIOLOGY

Detailed explanation-1: -Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.

Detailed explanation-2: -Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor. Condensation happens one of two ways: Either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water.

Detailed explanation-3: -This process is the opposite of vaporization/evaporation. As water changes into water vapor via the process of vaporization, it rises up in the atmosphere. At the height, the water vapors change into very tiny particles of ice or water droplets in the upper layers of air where it is cooler because of low temperatures.

Detailed explanation-4: -Condensation is a change of water from a gaseous form into liquid water. Condensation occurs when the hot air rises and cools and looses capacity to hold water vapour. As a result, the excess vapour condenses to form cloud droplets.