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What conditions are required for cloud formation?

Answer 1

Water moves into the atmosphere through transpiration and evaporation. As the water vapor rises, it cools because of a drop in pressure. When the water vapor cools down enough, it condenses as liquid water on dust particles to form clouds. Eventually, water returns to Earth as precipitation in the form of rain, sleet, hail, and snow.

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Answer 2

Maya Adams

The conditions required for cloud formation are:

Moisture in the air (humidity)
Cooling of the air to its dew point (temperature at which air becomes saturated)
Condensation nuclei (tiny particles for water vapor to condense onto)
Rising air currents (to lift the moist air to higher altitudes where it cools and condenses)

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.