Wind is always named by where it is coming from!

It is called a NORTH wind because it is moving from the north to the south.

What would a wind be named if it is blowing from Washington to Oregon?

Most often noticed at the beach!

1. Land heats up faster than water.2. Warm air over land rises.3. Air over water moves to shore.4. Would occur during the day.5. Named a SEA breeze because it

comes from the sea.

http://www.coolweather.co.uk/

1. Land cools off faster than water.2. Warm air over water rises. 3. Cool air from land takes its place.4. Would occur at night.5. Called a LAND breeze because the

wind is coming from the land.

http://www.coolweather.co.uk/

Look at these two diagrams. Can you tell which is the land breeze and which is the sea breeze?

1. Blow steadily from the same direction all the time.

2. The path is curved because of the Coriolis Effect.

http://cimss.ssec.wisc.edu

• Find a partner, a piece of scratch paper, and a pencil• Draw a dot in the center of the paper and label it the

North pole• Person #1- put your pencil point on the North pole.

Try to draw a straight line away from the North pole.

• Person #2 – turn the paper counterclockwise as Person #1 draws the line.

Why do Global Winds Happen?• Regions of cold, heavy air have high air

pressure. – These regions are called highs.

• Regions of warm, light air have low air pressure. – These regions are called lows.

• Air moves from regions of high pressure to regions of low pressure.

• Winds form when air moves.

• As air over a warmer region is heated, it expands and becomes less dense.

• As air over a cooler region is cooled, it becomes heavier, or denser.

• The cool air moves in under the warm air. It pushes the warm air upward.

• As the warm air mixes with the cool air, it becomes heavier and moves downward.

Let’s Draw Them

Help sailors navigate global trade routes!

Move weather across the US!

Jet Stream1. In the upper

troposphere.2. Very fast 200-

400 kmh3. Go completely

around the earth.

Notice that the jet stream does not stay the same every day. But it is always there!

Notice on this weather map in motion how the rain moves toward the east over time.

Can you answer these review questions?

1. What causes wind?1. The uneven heating of the

Earth

2. What are the two types of wind?

1. Local and Global

3. What heats up faster – land or water?

1. LAND