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Describe the convection current inside the earth

Describe the convection current inside the earth. A CONVECTION CURRENT is the movement of material caused by the differences in temperature. convection can lead to different plate tectonic processes. PLATES. refer to the moving, irregularly-shaped slabs that fit together. TECTONICS.

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Describe the convection current inside the earth

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  1. Describe the convection current inside the earth

  2. A CONVECTION CURRENT is the movement of material caused by the differences in temperature

  3. convection can lead to different plate tectonic processes

  4. PLATES refer to the moving, irregularly-shaped slabs that fit together TECTONICS refers to the branch of geology that deals with the movements that shaped the earth’s crust

  5. Plate Tectonics (tehk-THAN-ihks) Plate tectonics explains how the earth has evolved over time. It explains the formation, movements, collision and destruction of the earth’s crust.

  6. The theory states that Earth's outermost layer, the lithosphere, is broken into 7 large, rigid pieces called plates. • Pacific Plate • North American • South American • Eurasian • Indian • African • Antarctic

  7. Plates move at different speeds and in different directions. • Some small plates that lack landmasses move as much as several cm per year. • Large plates move only a few cm per year.

  8. Plate Boundaries In few cases, the edges of the continents are boundaries of plates. However, most of the boundaries are on the ocean floor.

  9. There are 3 types of plate boundaries: Convergent Divergent Strike-Slip

  10. Divergent Plate Boundaries • Occur at mid-ocean ridge • Also known as CONSTRUCTIVE BOUNDARIES

  11. Divergent plate motion is very evident in sea floor spreading

  12. Convergent Boundaries • Plates come together (converge) at the trenches • Trenches are called CONVERGENT BOUNDARIES

  13. The collision of plates at convergent boundaries causes tremendous pressure and friction. • Severe earthquake often results.

  14. Strike-Slip Boundary • Two plates grind together and slip past each other horizontally • No new plate material is made and no plate material is destroyed; thus, it is also known as CONSTRUCTIVE BOUNDARY

  15. Plate Tectonics accounts: • The lithosphere is divided into plates. • Plate movements: • spread – divergent • collide – convergent • slide past each other – strike-slip • Landforms are developed through plate • motions. • The mechanism of the movement of plates was well explained – CONVECTION CURRENT

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