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Understanding the Abrasion Layers of the Earth's Crust and Their Composition

Explore the Earth's structure, focusing on the abrasion layers of the crust, mantle, and core. The crust, the thinnest and outermost layer, is less than 1% of the Earth's mass and varies in thickness from 5 to 100 km. It can be continental or oceanic, composed primarily of oxygen, silicone, and aluminum. Beneath lies the mantle, accounting for 67% of Earth's mass, rich in magnesium. The core, at the center, is made mainly of iron and nickel, with extreme temperatures. Learn about the lithosphere, asthenosphere, mesosphere, and the dynamics of tectonic plates.

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Understanding the Abrasion Layers of the Earth's Crust and Their Composition

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Presentation Transcript

  1. Bell Ringer October 6th: Explain Abrasion

  2. Layers of the Earth

  3. Crust • The thin and solid outermost layer of the earth above the mantle. • Less than 1% of the Earth’s mass. • 5 to 100 km thick • Temperature ranges from 0 degrees C to 1000 degrees C. • Can be Continental or Oceanic. • Made of oxygen, silicone, and aluminum.

  4. Mantle • The layer of rock between the Earth’s crust and core. • 67% of the Earth’s mass. • 2,900 km thick • 1,000 degrees C to 3,700 degrees C. • Similar to the crust, but has more magnesium.

  5. Core • The central part of the Earth below the mantle. • 33% of the Earth’s mass with a radius of 3,430 km. • Temperature ranges between 3,700 degrees C to 7,000 degrees C. • Made of mostly iron and some nickel.

  6. Lithosphere • The solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle. • Between 15-300 km thick.

  7. Asthenosphere • The soft layer of the mantle on which the tectonic plates move. • About 250 km thick.

  8. Mesosphere • The strong, lower part of the mantle between the asthenosphere and the outer core. • About 2,250 km thick.

  9. Tectonic Plate • A block of lithosphere that consists of the crust and the rigid, outermost part of the mantle.

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