Global & Local Winds Chapter 15 Section 2.

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Presentation transcript:

Global & Local Winds Chapter 15 Section 2

Bellringer What causes winds? If you open the valve on a bicycle tube, what happens? Why?

Bellringer What causes winds? Winds are caused by the unequal heating of the Earth’s surface, which causes pressure differences. If you open the valve on a bicycle tube, what happens? Why?

Bellringer If you open the valve on a bicycle tube, what happens? Why? The air rushes out. The air inside the tube is at a higher pressure than the air is outside the tube. Letting air out of the tube creates wind.

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Wind The movement of air caused by differences in air pressure.

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Local Winds Moves short distances & can blow from any direction. Geographic Features: Shorelines Mountains These can produce temperature differences that cause local winds

Local Winds Moves short distances & can blow from any direction. Geographic Features: Shorelines Mountains These can produce temperature differences that cause local winds

Global & Local Winds Explain the relationship between air pressure and wind direction. Describe global wind patterns. Explain the causes of local wind patterns.