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Introduction
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Winds
Global Wind Patterns
Part I: Thermohaline Circulation
Using your notes and text from our study of currents, draw the deep ocean circulation on the globe. Use one
color for warm ocean currents and a second for the cold ocean currents.
Part II: Global Air Circulation
Using the globe on which you have drawn the Ocean Conveyor Belt, we will create a model of global air
circulation. In this model, we will only focus on the oceans, and that the Earth is not rotating on its axis.
1. Label the areas of high (H) and low (L) pressure on the globe with the dry-erase markers.
2. Cut out construction paper lengthwise into strips, and tape two of these long strips together to create a
loop.
3. Create one loop for the Northern Hemisphere and one for the Southern Hemisphere
4. Label the loops with arrows to show the direction of flow (i.e. where does air rise and where does it
sink?
5. Tape the loops to the globe and sketch the diagram below. How do your paper loops relate to the ocean
currents drawn on the globe?
Patterns:
Sketch:
What causes global wind patterns?
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Introduction
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Part III: The Effect of the Earth’s Rotation
Materials: half sheet of paper, pencil, partner
Procedure:
1. Draw an arrow to the left on one half sheet of paper and to the right on the other half sheet of paper.
2. Near the top of both sheets of paper, put an X. Near the bottom of both sheets of paper, put a Y.
3. Designate yourselves “Partner A” (on right) and “Partner B” (on left):
4. Situation 1: Using the half sheet of paper with the arrow pointing to the left: Partner A will pull the
paper to the right as Partner B draws a straight line from X to Y
5. Situation 2: Using the half sheet of paper with the arrows pointing to the left: Partner B will pull the
paper to the left as Partner A draws a straight line from X to Y
Analysis:
1. Which situation from above represents motion in the Northern Hemisphere? ___________________
2. Which situation from above represents motion in the Southern Hemisphere? ___________________
3. Which situation shows the line deflecting to the right of the intended path? ____________________
4. Which situation shows the line deflecting to the left of the intended path? ______________________
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Introduction
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Guided Notes: Circulation Patterns
Model 1: Non-Rotating Earth:
Model 2: Rotating Earth:
______________ large thermally produced cells
The two cell convection system would ____________
would form in a non-rotating Earth system
___________________ into _______________ cells
Why is rotation important? ___________________________________________________________________
The Coriolis Effect is _______________________________________________________________________
_________________________________________________________________________________________
In the ________________ Hemisphere:
Heading ________________ on the globe will deflect
you to the ________________. Heading
_______________ on the globe will deflect you to the
______________.
In the ________________ Hemisphere:
Heading __________________ on the globe will
deflect you to the ________________. Heading
________________ on the globe will deflect you to
the _______________.
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Introduction
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Winds
Atmospheric Convection and Global Winds:
1. Label the major wind systems of the world: Polar Easterlies, Westerlies, Trade Winds, Doldrums, Horse
Latitudes
2. Draw arrows in each wind belt to show how the wind is moving
3. Label the pressure belts, including the “sub polar lows” pressure belt
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Introduction
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Winds
Some Definitions:
a. Polar Easterlies:
b. Westerlies:
c. Trade Winds:
d. Doldrums:
e. Horse Latitudes:
f. Global Winds are influenced by _____________________________