A tectonic boundary where two plates are moving toward each other. If the two plates are of equal density, they usually push up against each other, forming a mountain chain. If they are of unequal density, one plate usually sinks beneath the other in
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Card 17
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A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates.
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Card 18
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The relatively thin part of the earth's crust which underlies the ocean basins.
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Card 19
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When the crust becomes molten called magma. This may be forced to the surface of the earth causing a volcanic eruption.
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Card 20
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The continents fit together like puzzle pieces
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Card 21
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Folding, faulting, volcanic activity, igneous intrusion and metamorphism can all be parts of the orogenic process of mountain building.
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Card 22
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A current in a fluid that results from convection. Occur in the mantle under the earth’s crust
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Card 23
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A theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, ar
