Layers of the Earth and Tectonic Plates
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Thinnest Layer
Crust
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Contains most of the Earth's mass
Mantle
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Made mostly of nickle, iron, sulfur, and oxygen
Core
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Makes up tectonic plates
Lithospere
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Putty-like soft part of Mantle
Asthenosphere
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Goes to Core, almost solid
Mesosphere
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Puzzle-like pieces floating on Asthenosphere
Tectonic Plates
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Underwater mountain
Mid Ocean Ridge
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Supercontinent
Pangaea
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Trace of an ancient organism
Fossil
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New material is added to the ocean floor
Sea Floor Spreading
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push together; mountains
Convergent
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divide, separating; mid-ocean ridge, rift valley
Divergent
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grind against, slide; earthquakes, fault line
Transform
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Deep underwater canyons
Deep Ocean Trench