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Earth’s Layers Crust, Mantle, Core. https://www.khanacademy.org/science/cosmology-and- astronomy/earth-history-topic/plate- techtonics/v/structure-of-the-earth.

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Presentation on theme: "Earth’s Layers Crust, Mantle, Core. https://www.khanacademy.org/science/cosmology-and- astronomy/earth-history-topic/plate- techtonics/v/structure-of-the-earth."— Presentation transcript:

1 Earth’s Layers Crust, Mantle, Core

2 https://www.khanacademy.org/science/cosmology-and- astronomy/earth-history-topic/plate- techtonics/v/structure-of-the-earth Video

3 Layering occurred early in Earth’s formation  temperature within the planet increased due to radioactive decay  melting occurred and the more dense materials were pulled to the core  Heat from the core and radioactivity within the mantle keep the mantle hot  Changes in temperature and pressure affect the physical properties and mechanical behavior of Earth materials

4 Crust  Outermost layer  Cool, rigid shell  1% of Earth’s mass  Oceanic Crust and Continental Crust

5  Almost 2/3 of Earth’s mass  Lithosphere – upper mantle and the crust  Made up of mostly igneous rock  Asthenosphere – partially melted due to increases in pressure and temperature Mantle

6  Heaviest (most dense) material  b/c of the extreme pressures even though the temperatures are high  Solid inner core  Liquid outer core  Nearly 1/3 of Earth’s mass  Flow of Iron in outer core – Earth’s magnetic field Core


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