Clouds!

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Clouds!

Transcript of Clouds!

Page 1: Clouds!

Clouds!

Page 2: Clouds!

How clouds are formed

• Orographic lifting occurs when air is forced upward by a barrier of mountains or hills.

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How clouds are formed

• Convective lifting occurs when air heated at the earth's surface rises in the form of thermal currents or bubbles.

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How clouds are formed

• Widespread ascent results from the interaction of air masses, or the movement of a cold air mass forcing warm air to rise ahead of it.

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How clouds are formed

• Mechanical (or frictional) turbulence occurs when the air flow is deformed into a series of eddies as it moves over the earth's surface.