Plate Tectonics Lesson Review

New sea floor is constantly being formed through the process of _________

• continental drift

• sea-floor spreading

• convecton

• ridge push

_______ _______ is one process thought by scientists to be a cause of tectonic plate movement.

• deep sea trenches

• earthquakes

• Mantle convection

• Mid-ocean ridges

Check all that are evidence for continental drift:

• Matching coastlines

• Slab pull

• Identical rocks and fossils

• Past glacial movement

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In 1912, Alfred Wegener formally proposed the hypothesis of

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________________________ results in the formation of sea floor.

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In science, a ________________ is a system of ideas that explain any related observations and is supported by a large body of evidence.

What process have scientists proposed to explain how tectonic plates move? (check 3)

• Ridge push

• Slab pull

• Identical fossils

• Mantle convection

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Name at least 2 pieces of evidence Alfred Wegener used to develop his continental drift hypothesis

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Which color shows the youngest sea rock?

(use your map on page 191)

• Red

• Green

• Blue

• Yellow

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Which parts of the Atlantic ocean have the oldest sea-floor rock?

(page 191)

• In the middle

• To the north

• Near the coastlines

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