Global Forces

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Global Forces

• Notes for the Student Study Guide

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Continental Deflection
Global Forces Transparency
Equator
Earths Rotation
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Continental Deflection
Since the Earths surface is not fully covered by
water, currents cannot move freely around the
world. So when surface currents meet continents,
they deflect, or change direction.
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Predict what will happen with each labeled area.
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Continental Deflection
Global Forces Transparency
Coriolis Effect
Equator
Earths Rotation
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Coriolis Effect
The Earths rotation causes surface currents to
move in curved paths rather than in a straight
line.
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Continental Deflection
Global Winds
Global Forces Transparency
Coriolis Effect
Equator
Earths Rotation
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Global Winds
Global winds are affected by their latitude and
the Coriolis Effect. In the tropics winds blow
from the east to the west. In more temperate
areas, the winds blow from the west to the east.
Near the poles the winds blow from the east to
the west.
Polar Easterlies
Westerlies
Tradewinds
Tradewinds
Westerlies
Polar Easterlies
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Continental Deflection
Global Winds
Global Forces Transparency
Coriolis Effect
Deep Ocean Currents
Equator
Earths Rotation
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Deep Ocean Currents

• Deep cold currents move water toward the equator.
• Cold water rises to replace warm water leaving.
• Warm water travels near the surface toward polar
  regions.
• Warm water replaces cold water.

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Continental Deflection Since the Earths surface
is not fully covered by water, currents cannot
move freely around the world. So when surface
currents meet continents, they deflect, or
change direction.
Global Winds Global winds are affected by their
latitude and the Coriolis Effect. In the tropics
winds blow from the east to the west. In more
temperate areas, the winds blow from the west to
the east. Near the poles the winds blow from the
east to the west.
Global Forces Transparency
Coriolis Effect The Earths rotation causes
surface currents to move in curved paths rather
than in a straight line.
Deep Ocean Currents Deep cold currents move
water toward the equator. Cold water rises to
replace warm water leaving. Warm water travels
near the surface toward polar regions. Warm water
replaces cold water.
Equator
Earths Rotation