3 Let's Get Started… Coriolis Effect Jet Stream Land Breeze Sea Breeze Before we begin, let’s make the 4-fold windowpane.Coriolis EffectJet StreamLand BreezeSea Breeze
4 Activator : Identifying Misconceptions. Look at the fan…What causes the wind to move?Electricity is running a motor.It causes the blade to move.As the blades turn, they move the air.On your notecard,Hypothesize how your think the air outside moves.Is there a “fan” that makes the wind blow?Share your thoughts with a neighbor or table.
5 Let's begin reading p. 309 Focus on the following: - What causes some areas to be warmer than others?- What part of Earth receives the most sunlight throughout the year?
6 Teaching… Forming Wind p. 309 Uneven heating of Earth’s surface by the Sun causes some areas to be warmer than others.Remember:Hotter air is less dense, so…heated air from the equator “rises”or moves toward the poles.Cooler air is more dense, so…the cooler air from the poles “falls”or moves toward the equator.These are the convection currentsthat encircle the globe.
7 Focus on the following: - What is the Coriolis Effect? Continue reading p. 310Focus on the following:- What is the Coriolis Effect?
8 Check the merry-go-round for a video demonstration. Teaching…p. 310What Would Happen If…You and a friend were sitting on opposite ends of a merry-go-round and you threw a ball to your friend.Would the ball get directly to your fried?With a partner, discuss why you think it would or would not reach your friend.Check the merry-go-round for a video demonstration.
9 The Coriolis Effect..p. 310The rotation of Earth causes moving air and water to APPEAR to turn to the right north of the equator and to the left south of the equator.It is all aboutPERSPECTIVE!!!!!Confused??? Try this…Stand up facing the board. Point to something on your right.Turn around 180˚Point to the same spot. Is your original point still on your right?
10 The Coriolis Effectp. 310If the Earth did not rotate at all, the winds would simply move straight up and down between the equator and the poles.
11 Drop It – Think It – Ink It On your note card, write and complete the following sentences.The uneven heating of the Earth is due to…The Coriolis Effect is…It is caused by…Share with yourpartner or table.
12 Yes…more reading! p. 312 Focus on the following: - Surface Winds Prevailing WesterliesTrade Winds- Winds in the Upper TroposphereJet Streams
13 Surface Windsp. 312Winds blowing from 30˚N and 30˚S towards the equator are called the TRADE WINDS.Why were they called the trade winds?Early sailors used thesedependable currents toestablish trade routes.
14 Surface Windsp. 312Winds blowing between 30˚ and 60˚ latitude travel opposite of the trade winds. These are called the PREVAILING WESTERLIES.Why are the prevailing westerlies important?They are responsible formuch of the movementof weather inN. America.
15 Surface Windsp. 312Winds blowing near the North and South poles are called the POLAR EASTERLIES.Guess what…THE WATER IS COLD HERE! (seriously)The cold waters here travelback towards theequator.
16 Winds in the Upper Troposphere What phenomena occur in the troposphere only???THE WEATHER!!!!!!!!!!!!!!!The JET STREAMS are narrow bands of strong winds that blow near the top of the troposphere.North of jet streamsyou find cold, dry air.South of jet streamsyou find warmer,more moist air.
17 The JET STREAMSp. 312Pilots flying east will try to fly in the jet streams due to their increased speed, causing pilots to make quicker trips and using less fuel.
19 THUMBS UP – THUMBS DOWNRead each statement, then decide if you agree (thumbs up) or disagree (thumbs down).The Earth rotates from west to east.The trade winds occur from 60˚N and 60˚S towards the equator, and are named because they were originally used by sailor who used these currents to set up trade routes.To the south of the polar jet stream you would find colder, drier weather.Pilots who are flying east will try to use the jet streams to save more fuel and time.
20 Finally, read p. 312-313 Focus on the following: - The differences between sea breezes and land breezes.
21 SEA and LAND BREEZES WHAT’S THE DIFFERENCE? p. 313 Convection currents over areas where the land meets the sea can cause wind.WHAT’S THE DIFFERENCE?SEA BREEZELAND BREEZE
22 SEA BREEZE p. 313 What makes a sea breeze a sea breeze??? Occurs during the daytime.(notice the sun shining!)Solar radiation warms the landfaster that the water.Air over the land is heated andrises. (convection current starts!)Cooler, denser air has higherpressure and falls toward theocean, pushing the cooler air offthe sea and towards the land.
23 LAND BREEZE p. 313 What makes a LAND breeze a LAND breeze??? Occurs at night.(notice the moon!)At night, the air over land coolsfaster than the ocean.Air over the warmer water beginsto rise.Cooler, denser air over the landhas higher pressure and fallstoward the land, pushing thecooler air off the land and towardsthe sea.
24 Text Me the 4-1-1On the back of your note card, create a text message to your BFF describing how a land breeze forms or how a sea breeze forms.Remember…details…details!Help!I need the 411 on land breezes and sea breezes!Sho me wat u got!
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