UNIT 2 TEST REVIEW– OCEANS, SEA FLOOR FEATURES, BATHYMETRYPLATE TECTONICS

Topics to study:

  1. Oceans
  2. Major oceans
  3. Locations of trenches & MOR
  4. Locations of seas
  5. Ocean floor features / topography
  6. Continental Margin
  7. Continental Shelf
  8. Continental Slope
  9. Shelf Break (where shelf & slope meet)
  10. Continental Rise
  11. Submarine Canyon
  12. Ocean Basin
  13. Abyssal Plain
  14. Abyssal Hill
  15. Seamount
  16. Guyot
  17. Island
  18. Hot Spots
  19. Trenches
  20. Mid Ocean Ridge (MOR)
  21. Rift Valley
  22. Bathymetry – how do we determine the topography of the ocean floor? SONAR
  23. Plate Tectonics
  24. Continental Drift
  25. Alfred Wegener
  26. Theory
  27. Pangaea
  28. Evidence
  29. Puzzle-fit of continents
  30. Similar rocks, mountains & fossils
  31. Why rejected
  32. Plate Tectonics
  33. Theory
  34. Layers of Earth – core, mantle, crust (composition)
  35. Oceanic crust – basalt (dense)
  36. Continental crust – granite (less dense)
  37. Lithosphere & asthenosphere (physical characteristics)
  38. How many plates
  39. Evidence
  40. Location of volcanoes & earthquakes
  41. Magnetic patterns
  42. Seafloor spreading (seafloor created at MOR, destroyed at trenches)
  43. Older rocks away from MOR
  44. Hot spot volcano patterns (Hawaiian islands)
  45. Plate boundaries
  46. Divergent Oceanic-Oceanic
  47. Divergent Continental-Continental
  48. Convergent Continental-Continental
  49. Convergent Oceanic-Continental or Oceanic-Oceanic (Subduction)

Unit 2 Test – Oceans, Sea Floor Features, Bathymetry & Plate Tectonics

71% / Percent of Earth’s surface covered by water
Abyssal Plain / Smoothest part of the ocean
Atlantic Ocean / The ocean that is getting wider
Basalt / What oceanic crust is made of
Below Sea Level / How oceanic crust compares to continental crust
Continental Drift / Theory that continents were once joined together & broke apart
Continental Margin / Submerged part of the continent
Continental Rise / Feature at the base of a continent composed of sediments eroded from the continent
Continental Shelf / Shallowest part of the continental margin
Continental Slope / Steepest part of the continental margin
Denser / How oceanic crust compares to continental crust
Granite / What continental crust is made of
Guyot / Large, extinct volcano with a flat top
Ice comets & volcanoes / Origin of the ocean
Iceland / Where the mid-ocean ridge rises above sea level
Interconnected / Mid-ocean ridges
Lithosphere / Crust & upper mantle that “floats” on the asthenosphere
Major Ocean Basins / Arctic, Atlantic, Indian, Pacific, Southern
Mantle / Semi-solid layer of silicon, magnesium & iron, below the crust
Mid-Ocean Ridge / Divergent plate boundary
Near Mid-Ocean Ridges / Where youngest seafloor rocks are found
Oceanic Ridge / Sea floor is created
Older / How continents compare in age to seafloor
Older / Age of rocks as you move away from a mid-ocean ridge
On Continents / Where the oldest rock of the planet are found
Pacific Ocean / Largest & deepest ocean
Recycled / What happens to seafloor at a trench
Sea Floor Spreading / Occurs at mid-ocean ridges & where new sea floor is created
Smaller / How continental topography compares to oceanic bathymetry
SONAR / Technology that sends sound waves that bounce off the ocean floor to map the ocean’s features
Southern Ocean / Body of water surrounding Antarctica
Thinner / How oceanic crust compares to continental crust
Trench / Sea floor recycled/destroyed
Trench / Occurs when an ocean plate sinks back in to the asthenosphere
Volcanoes & Earthquakes / Occur at mid-ocean ridges
Younger / How oceanic crust compares to continental crust

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