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Water In The Atmosphere

Question

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How are clouds formed ?

Solution

Cloud is a mass of minute droplets of water or tiny crystals of ice formed by the condensation of the water vapour in free air at a considerable elevation. As the clouds are formed at some height over the surface of the earth, they take various shapes. The clouds are classified as under according to their height, expanses, lensity and transparency.

Some More Questions From Water In The Atmosphere Chapter

What is sublimation?

What is the greatest source of atmospheric moisture ?

What is meant by humidity ?

What factors control the evaporation ?

Write the various types of clouds.

What are the different types of fog?

Define dew and mention the ideal conditions for its formation.

The process by which water is transformed from liquid to gaseous state.

The amount of water vapour actually present in per unit volume of air.

The amount of water vapour actually present in per unit weight of air.

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