The Theory of Plate Tectonics

What is the theory of plate tectonics?

• The theory that describes how Earth's outer layers is broken up into moving tectonic plates

• Tectonic plates stay in one place

• All of the continents were once apart of a Super Continent called Panthalassa

• All of the plates were once a solid plate until they broke up and moved to their current position

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Who is the person credited with developing the theory of continental drift?

• Harry Hess
• Galileo
• Alfred Wegener
• Newton

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Who first proposed the idea of Continental Drift?

• Harry Hess

• Alfred Wegener

• Albert Einstein

• Galileo Galilee

Meteorologist who discovered that the continents were 'drifting'

• Alfred Wegener

• Harry Hess

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Who first proposed the idea of seafloor spreading?

• Alfred Wegener

• Harry Hess

• James Hutton

• Nicolaus Copernicus

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What troubled Wegener about glaciers being found in unexpected locations?

• Glacier evidence was found in places that were too hot for ice.

• Glacier evidence was found in places that were too cold for glaciers.

• Glaciers leave behind rock deposits as they move.

• Glaciers leave deep scratches in the rocks.

What did Wegener name the large supercontinent where all the continents were joined together?

• Wegenerland

• Gondwanaland

• Laurasia

• Pangaea

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Wegener used the fit of the continents as evidence to support his hypothesis of Continental Drift.

• true

• false

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How did geologists feel about Wegener's theory?

• They ridiculed him and did not accept his theory.

• They were thrilled with him for finding the answers.

• They accepted only a part of his theory.

• They did not agree, but welcomed his work.

After WWII, what was discovered in the oceans that supported his theory?

• mountains in the middle of the ocean

• fossils of plants

• a crater from a meteorite impact

• fossils of animals

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