Theory of Plate Tetonics

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by PalePanda
Last updated 6 years ago

Discipline:
Science
Subject:
Earth Sciences
Grade:
8

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Theory of Plate Tetonics

Theory of Plate Tetonics

Tetonic Plates are large slabs of rock which "float" on the earth's mantle (A layer of magma under the lithosphere) . When they move, they can create earthquakes, volcnoes, or create mountains.

What was the early theory of continental drift; who developed it and when was it developed?

What were the discoveries that led to a theory of plate tetonics, and when were these discoveries made?

What is Earth's lithosphere made of, and how does it affect crustal features?

What features of Earth's crust do convergent, divergent, and transform boundries form?

What land features formed by the movement of tetonic plates can be observed using images from space?

The theory of Plate Tetonics came from the theory of continental drift. The discovery came from Alfred Wegener in 1912. This was supported by the fact that South America's coastline fits into Africa's, and that there were identical fossils on both Africa and South America.

The lithosphere is the top layer of the crust, mainly made of basalt. The lithosphere is what creates tetonic plates. when the plates move, they can create volcanoes and mountains.

A convergent boundry is when two plates push against each other. When this happens, both mountains and volcanoes are created from this boundry.A divergent boundry is when two plates pull apart from each other. When this happens, lava comes out of the ridge and new crust is then created. A transform boundry is created when two plates slide next to each other. The result is large earthquakes throughout the region, but there is no molten rock.

Almost all landforms that can be seen with the naked eye are results of plate tetonics. Ridges, threnches, Mountains, Volcanoes, and even continents and oceans are result of plate activities.

It was originally created by a man named Alfred Wegener in 1912, who proposed that the continents were once a large super-conttinent he called Pangea.

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Jacob Roy, 6th


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