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Semelhante a 2.1i earth's interior and plate tectonics review and enrichment lesson
Semelhante a 2.1i earth's interior and plate tectonics review and enrichment lesson (20)
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2.1i earth's interior and plate tectonics review and enrichment lesson
- 1. Review - Video Clips • Plate Tectonics http://www.youtube.com/watch?v=ryrX AGY1dmE&feature=related • Convergent Boundary http://www.youtube.com/watch?v=6OH Rb_ODo-Q&NR=1 • Transform Boundary http://www.youtube.com/watch?v=1oLe KTvSIzQ&feature=related
- 2. Plate Tectonics • Lithosphere – the thin outer shell of Earth, consistin g of the crust and the rigid upper mantle.
- 3. Plate Tectonics • Athenosphere – The zone of the mantle beneath the lithosphere – consists of slowly flowing solid rock.
- 4. Plate Tectonics • Magma – molten rock within the earth. • Heats up materials causing it to expand
- 5. Plate Tectonics • Expanding region of athenosphere pushes lithosphere upwards. • This causes the lithosphere to crack and push plates apart
- 6. Kinds of Plate Boundaries 2 3 1 4 6 5 • Convergent Boundary
- 7. Kinds of Plate Boundaries 1 2 3 6 4 5 • Divergent Boundaries
- 8. Kinds of Plate Boundaries 1 2 Fault 3 • Transform Boundary
- 9. Divergent Boundaries • Divergent • Divergent Movement boundary – two plates moving apart creating a gap between.
- 10. Divergent Boundaries • Mid Oceanic Ridges – Mountain ranges that form at divergent boundaries
- 11. Divergent Boundaries • New Lithosphere is being created at mid-oceanic ridges.
- 12. Convergent Boundaries • Convergent boundary – two plates moving towards each other. • Convergent
- 13. Convergent Boundaries • Oceanic plate are thinner than Continental plate. • When they converge, one of them dives down • Convergent
- 14. Convergent Boundaries • Subduction – The process in which a tectonic plate dives beneath another tectonic plate and into the asthenosphere.
- 15. Convergent Boundaries • Oceanic crust melts when it subducts.
- 16. Convergent Boundaries • Old lithosphere is destroyed at convergent boundaries.
- 17. Transform Boundaries • Breaks in the lithosphere caused by plate movement. • Transform movement is characterized by plates scrapping past one another.
- 18. Transform Boundaries • Breaks in the lithosphere are caused by plate movement. • Transform movement is characterized by plates scrapping past one another.
- 19. Transform Boundaries • The cracks in the Earth where the rocks move past one another are called faults. • The great forces involved in plate movement tear at the Earth and cause earthquakes.
- 20. Kinds of Plates • Divergent • Convergent • Transform