Section 16-3. Explain what you think causes WIND.

WindSection 16-3

Explain what you think causes WIND.

Warm-up

Caused by a difference in AIR PRESSURE

WIND

Horizontal movement of air from an area of High Pressure to an area of Low Pressure

WIND

WIND

Measured with an Anemometer

Wind Speed

Anemometers

Blow over short distances

Form only when no other winds are blowing from farther away.

Caused by unequal heating of Earth’s surface.

Local Winds

Winds are named by where they come FROM

Naming Winds

Sea Breeze

Land Breeze

Seasonal Land and Sea Breezes which occur annually

Monsoons

Monsoons

Monsoons

Monsoons

Monsoons

Monsoons

250 cm = 98 in

PA = 41 per year, about 3 per month

Caused by the movement of air from the poles to the equator

Global Winds

Sunlight hits most directly at the Equator

Near the Equator

Warm air is rising, so there is little or no wind

Doldrums

Doldrums

Global Wind - principle

Global Wind - reality

Global Winds

Winds curve because of the spinning of the earth

Coriolis effect

Coriolis effect

Jet Stream

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