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TEK 8.9 Earth and Space

TEK 8.9 Earth and Space. The student knows that natural events can impact Earth systems. The student is expected to: 8.9 A) Describe the historical development of evidence that supports plate tectonic theory. 8.9 B) Relate plate tectonics to the formation of crustal features.

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TEK 8.9 Earth and Space

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  1. TEK 8.9 Earth and Space The student knows that natural events can impact Earth systems.

  2. The student is expected to: 8.9 A) Describe the historical development of evidence that supports plate tectonic theory. 8.9 B) Relate plate tectonics to the formation of crustal features. 8.9 C) Interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering.

  3. 8.9 Vocabulary Continental Drift Pangaea Plate Tectonics Mountain Building Volcano Erosion Lithosphere Seafloor spreading Divergent plate boundary Trench Topography Weathering Mid-Ocean Ridge Topographic map Asthenosphere Convergent plate boundary Transform boundary

  4. Take Projects Home!!

  5. Science Starters…Watch This! The Himalayas The Ring of Fire Tsunami San Francisco Earthquake

  6. Discussion Questions These clips are all related to each other.  The clips showed a volcano, an earthquake, a mountain range and a tsunami.   • What caused these events to occur? • How are these things connected?

  7. Discussion Questions • What do you think is meant by the term “continental drift” ? • What do you know about it? • How does it relate to the clips you saw?

  8. The Theory of Continental Drift -proposed by Alfred Wegner 1912 -states that all the continents were once connected in a single, large land mass -broke apart 200 million years ago and drifted slowly to their current positions -moving 1-10cm per year

  9. Pangaea • Large ancient land mass that was composed of all the continents joined together. • Greek meaning “all land”

  10. Pangaea

  11. Evidence of Continental Drift • Pieces of a Puzzle • Fossil Record (similar fossils found on different continents) • Rock Type and Structure(similar rocks found on different continents) • Climate (fossils of plants and animals not suited for current climate of continent)

  12. Pieces of a Puzzle

  13. Fossil (plant/animal) Record

  14. Rock Type and Structure

  15. Climate

  16. Pangaea

  17. The Theory of Plate Tectonics -proposed by Harry Hess in 1960’s -describes and explains the way that continents separated into today’s land masses from Pangaea (one large ancestral land mass).

  18. Lithosphere -the outermost layer of the Earth’s surface, which is rocky and solid. -includes the crust and the rigid part of the upper mantle. -Includes the tectonic plates that move on semi liquid mantle

  19. **Asthenosphere** Scientists believe that convection currents within the asthenosphere are responsible for the movement of the plates that form the Earth's crust.

  20. Lithospheric Plates

  21. Watch This Continental Drift Bill Nye Layers of the Earth

  22. Evidence of Continental Drift

  23. Quiz #2 • This theory states that all the continents were once connected in a single, large land mass • Name the person responsible for this theory. • Name that ancestral landmass. • The theory that describes and explains the way that continents separated into today’s land masses from one large ancestral land mass. • Name the person responsible for this theory. Bonus: Name 2 pieces of evidence that support these theories

  24. The student is expected to: 8.9 A) Describe the historical development of evidence that supports plate tectonic theory. 8.9 B) Relate plate tectonics to the formation of crustal features. 8.9 C) Interpret topographic maps and satellite views to identify land and erosional features and predict how these features may be reshaped by weathering.

  25. Plate Boundariesand Land Formations

  26. Divergent Boundary • “Di-”meaning two • Boundaries in which plates move apart • Results in a Rift Valley or Mid Ocean Ridge

  27. Seafloor Spreading -Theory proposed by Harry Hess 1960 -States that new seafloor is formed when magma is forced upward toward the surface at a mid-ocean ridge. • Divergent boundaries

  28. Seafloor Spreading

  29. Mid Ocean Ridge -an underwater volcanic mountain range -typically has a valley known as a rift running along its spine

  30. Mid Ocean Ridge

  31. Mid Ocean Ridge

  32. Convergent Boundary -“con-” meaning together -Boundaries that come together -results in mountain building

  33. Convergent Boundary (subduction) -the process in which one lithospheric plate slides under another -can result in volcanoes and a trench.

  34. Transform Boundary -Boundaries run transversely to each other. • Slide past each other -Creates fault lines • Origin of earthquakes

  35. Transform Boundary

  36. Hayward Fault LineBerkely, California

  37. University of CaliforniaMemorial Stadium

  38. B A IV I D II III C

  39. B A IV I D II III C

  40. 1080 1200 1120

  41. 1080 1200 1120

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