Transcript Global Forces

Global Forces
Student Study Guide
Continental Deflection
Global Forces Transparency
Equator
Earth’s Rotation
Continental Deflection
Since the Earth’s
surface is not fully
covered by water,
currents cannot
move freely around
the world. When
surface ocean
currents meet
continents, they
deflect, or change
direction.
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1
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Predict what will happen with each labeled area.
Continental Deflection
Global Forces Transparency
Coriolis Effect
Equator
Earth’s Rotation
Coriolis Effect
The Earth’s
rotation
causes
surface
currents to
move in
curved
paths rather
than in a
straight line.
North
Pole
Earth’s Rotation
Continental Deflection
Global Winds
Global Forces Transparency
Coriolis Effect
Equator
Earth’s Rotation
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
Continental Deflection
Global Winds
Global Forces Transparency
Coriolis Effect
Deep Ocean
Currents
Equator
Earth’s Rotation
Deep Ocean Currents
• Deep cold currents
move water toward
the equator.
• Cold water sinks to
replace warm water
rising.
• Warm water travels
near the surface
toward polar regions.
• Warm water replaces
cold water.
Continental Deflection
Since the Earth’s 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.
Coriolis Effect
The Earth’s
rotation causes
surface currents
to move in
curved paths
rather than in a
straight line.
Equator
Earth’s Rotation
Global Forces Transparency
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.
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.