1 / 91

Plate Tectonics Review

Plate Tectonics Review. Chapter 8. The ______________ is made of partially melted, “plastic” rock material and plates “float” on it. asthenosphere. At subduction boundaries one plate __________________ another plate. Subducts/plunges/ sinks below. A transform boundary is when ___________.

chessa
Download Presentation

Plate Tectonics Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Plate Tectonics Review Chapter 8

  2. The ______________ is made of partially melted, “plastic” rock material and plates “float” on it.

  3. asthenosphere

  4. At subductionboundaries one plate __________________ another plate

  5. Subducts/plunges/ sinks below

  6. A transform boundary is when ___________.

  7. Two plates slide past each other at a fault

  8. The East-African Rift/Red Sea are examples of a ___________________

  9. Rift valley that formed at a continental-continental divergent boundary

  10. Why does magma rise?

  11. It is less dense than the surrounding material

  12. Some ________________ rocks contain iron-based magnetic minerals that “record” the direction of Earth’s magnetic field when the rock formed.

  13. igneous

  14. Mid-ocean ridges are broken into sections that are offset from each other by breaks called __________________ that are perpendicular (at right angles) to the ridge and are the source of earthquakes here.

  15. Fracture zones

  16. In 1912, Alfred Wegener proposed the hypothesis of ______________________, which stated the continents have moved over time.

  17. Continental drift

  18. As you move out from the center of a mid-ocean ridge, what happens to the temperature of the rock?

  19. Hottest rock is at the center, coolest rock is furthest out

  20. An example of a (mid-) ocean ridge is _________________.

  21. Mid-Atlantic Ridge • East Pacific Rise

  22. Plate tectonics provides evidence/an explanation for the location/occurrence of: • 1. • 2. • 3.

  23. 1. volcanoes • 2. earthquakes • 3. the formation of new crust (sea floor)

  24. When Earth’s magnetic field “matches” up with the geographic poles is known as _______________ polarity • Ex. magnetic north & geographic north match up and magnetic south & geographic south match up

  25. normal

  26. A ________________ is the border between 2 diverging plates.

  27. Rift valley

  28. As you move out from the center of the mid-ocean ridge, what happens to the age of the rocks?

  29. They go from younger to older

  30. 1 2 • Label the layers… 3 4

  31. Convergent boundaries are when 2 plates ___________________

  32. Move towards each other

  33. Name the 3 ways that plates can move in relation to one another

  34. Away from each other (divergent plate boundary) • Towards each other (convergent plate boundary) • Slide past each other (transform plate boundary)

  35. An example of a deep-sea trench is the ____________ trench

  36. Marianas • Peru-Chile • Tonga • Aleutian

  37. When Earth’s magnetic field does not “match” up with the geographic poles is known as _______________ polarity • Ex. magnetic north & geographic south match up and magnetic south & geographic north match up

  38. Reversed

  39. The ___________ is made up of the crust & uppermost mantle and is broken into “plates”

  40. lithosphere

  41. What are 3 features/effects found at oceanic-oceanic convergent plate boundaries. • 1. • 2. • 3.

  42. 1. trenches • 2. volcanic island arcs (on the overriding plate) • 3. earthquakes (shallow to very deep)

  43. What is the Ring of Fire?

  44. A ring of many active volcanoes around the Pacific plate’s boundaries

  45. (Mid-) ocean ridges form at ___________ plate boundaries

  46. Oceanic-oceanic divergent

  47. Some of the observations that support the hypothesis of continental drift are: • 1. • 2. • 3. • 4.

  48. 1. shape of continents (“puzzle fit”) • 2. fossils • 3. distinctive rock formations • 4. climate change evidence (ex. coal deposits)

  49. At a continental-continental divergent boundary, a ________ forms.

More Related