Social Studies
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Transcript of Social Studies
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Social StudiesEssential UNIT Question: How did geography
affect the development of the Eastern hemisphere?
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Focus Question:How did the geography of eastern Africa affect the development of human life?
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Geography in Motion:Plate tectonics is the shifting of the Earth’s
crust;The Earth’s landforms once made up a single
land mass called Pangea.Through divergent and convergent
movement, the Earth shifted over millions of years to form the present-day continents.
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The Earth in 50 Million Years
Plate Tectonics are on-going and continue to shift the ground beneath our feet.
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The Effects of Plate Tectonics: The Earth cooled and climates
changed.As a result, continents like Africa lost
many of its forests.Fossil records show that an ape-like
ancestor of man emerged from the de-forested areas of east Africa to walk on two legs. (4 million years ago.)
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Eastern Africa’s Geography circa 4 MYA
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Deforested Eastern Africa Following Climate Change
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Survival of the Fittest
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A Better, Smarter Version:
Larger brains
Opposable thumbs
Tool-making
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Geography Changed Everything!
Lucy
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The Pre-History of the Human RaceHumans evolved (to change over long periods
of time) to avoid extinction. Humans developed bipedalism: To walk on
two feet.Humans developed stereoscopic sight: To see
across great distances, which alerted them to predators.
Humans developed opposable thumbs to build tools out of stone and other materials.
Using tools made man more independent.
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Activity:
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What I learned . . .