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Earth Science Review. Explain how similar fossils have been found on both South America and Africa. Explain how similar fossils have been found on both South America and Africa. Both South America and Africa were once part of the same continent. Draw a profile of this topo map:.

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Presentation Transcript
explain how similar fossils have been found on both south america and africa1
Explain how similar fossils have been found on both South America and Africa.
  • Both South America and Africa were once part of the same continent.
draw a profile of this topo map1
Draw a profile of this topo map:

Valley

Steeper

Lower elevation

describe the way the theory of plate tectonics explains how the plates will look in the future1
Describe the way the Theory of Plate Tectonics explains HOW the plates will look in the future
  • The Atlantic Ocean will continue to widen, as the Pacific Ocean continues to shrink.
is this a topo map of a volcano why or why not1
Is this a topo map of a volcano? Why or Why not?

depression

No, there are no hachures at the top.

where how do volcanoes form1
Where (how) do volcanoes form?
  • At the boundary where tectonic plates converge (meet) and subduct.

trench

volcano

what happens to the age of the rocks as you move away from the mid ocean ridge1
What happens to the age of the rocks as you move away from the mid ocean ridge?
  • Rocks get older, proving that new sea floor is forming at the ridge.

youngest

oldest

older

oldest

older

at what point is the hill the steepest1
At what point is the hill the steepest?

Point B where the contour lines are the closest.

describe the formation of a tren c h
Describe the formation of a trench
  • Oceanic – continental OR
  • Oceanic – oceanic

convergence with subduction

name the most significant mid ocean ridge where is it located be specific
Name the most significant mid-ocean ridge.Where is it located? Be specific.
  • Mid Atlantic Ridge; along the boundary of the South American and African plates and North American and Eurasian Plates.
describe the formation of a mid ocean ridge1
Describe the formation of a mid-ocean ridge.
  • Divergence of oceanic-oceanic plates
  • Remember : Valley then Rift then Ridge
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