Ocean Geography 1. Earth’s Interior
Interior of the Earth: <ul><li>Three main levels: </li></ul><ul><ul><li>Crust </li></ul></ul><ul><ul><li>Mantle </li></ul>...
 
 
 
Crust <ul><li>Since it is the only accessible layer, we know the most about it.  </li></ul><ul><li>Consists of layered roc...
Plates
How the Plates Move:
Sea Floor Spreading: <ul><li>Two types of crust, Continental & Oceanic </li></ul><ul><li>Oceanic crust is constantly being...
 
Mantle: <ul><li>Heat from the core drives the convection in the mantle which in turn drives plate tectonics </li></ul><ul>...
 
Core <ul><li>Liquid outer core </li></ul><ul><li>Solid inner core </li></ul><ul><li>Much is speculated about its compositi...
Ocean Geography 2. Ocean Floor Features
 
 
Ocean Floor Features <ul><li>Continental Shelf – Shallow, sloping region that extends beyond the continent </li></ul><ul><...
Ocean Floor Features <ul><li>Abyss – deeper regions of the ocean </li></ul><ul><li>Abyssal Plain – nearly flat, smooth reg...
Ocean Floor Features: <ul><li>Mid Ocean Ridge – Mountain range in the ocean created usually by diverging or converging pla...
Ocean Geography: 3. Land & Water Features
Bay <ul><li>A body of water surrounded on three sides by land </li></ul>
Strait/Sound <ul><li>Water passage that connects two bodies of water or water ways </li></ul>
Delta <ul><li>A landform created from the deposits of a river as it enters a sea or ocean </li></ul>
Sea <ul><li>Usually a large body of salty water connected to an ocean </li></ul>
Cape <ul><li>A long pointed piece of land that sticks out into an ocean, lake, or sea </li></ul>
Peninsula <ul><li>A piece of land surrounded on three sides by water </li></ul>
Lake <ul><li>Body of water surrounded on all sides by land, very large ones are sometimes called seas </li></ul>
Fjord <ul><li>Long narrow sea inlet border on the sides by steep cliffs </li></ul>
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5. Ocean Geography Notes

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5. Ocean Geography Notes

  1. 1. Ocean Geography 1. Earth’s Interior
  2. 2. Interior of the Earth: <ul><li>Three main levels: </li></ul><ul><ul><li>Crust </li></ul></ul><ul><ul><li>Mantle </li></ul></ul><ul><ul><li>Core </li></ul></ul><ul><li>Volume Distribution: </li></ul><ul><ul><li>Core – 15% </li></ul></ul><ul><ul><li>Mantle – 85% </li></ul></ul><ul><ul><li>Crust - >1% </li></ul></ul>
  3. 6. Crust <ul><li>Since it is the only accessible layer, we know the most about it. </li></ul><ul><li>Consists of layered rocks located on 12 plates </li></ul><ul><li>The MOHO separates the crust from the mantle </li></ul><ul><li>Crust slides around on liquid mantle </li></ul><ul><li>5 km to 70 km in depth </li></ul>
  4. 7. Plates
  5. 8. How the Plates Move:
  6. 9. Sea Floor Spreading: <ul><li>Two types of crust, Continental & Oceanic </li></ul><ul><li>Oceanic crust is constantly being reformed </li></ul><ul><li>When it meets the continental crust it subducts into the mantle because it is more dense </li></ul>
  7. 11. Mantle: <ul><li>Heat from the core drives the convection in the mantle which in turn drives plate tectonics </li></ul><ul><li>Makes up the majority of the Earth’s volume </li></ul><ul><li>Solid, though ductile enough it flows on a long enough period of time </li></ul>
  8. 13. Core <ul><li>Liquid outer core </li></ul><ul><li>Solid inner core </li></ul><ul><li>Much is speculated about its composition </li></ul>
  9. 14. Ocean Geography 2. Ocean Floor Features
  10. 17. Ocean Floor Features <ul><li>Continental Shelf – Shallow, sloping region that extends beyond the continent </li></ul><ul><li>Continental Slope – Steep drop off located at the end of the continental shelf </li></ul>
  11. 18. Ocean Floor Features <ul><li>Abyss – deeper regions of the ocean </li></ul><ul><li>Abyssal Plain – nearly flat, smooth region of the ocean floor </li></ul>
  12. 19. Ocean Floor Features: <ul><li>Mid Ocean Ridge – Mountain range in the ocean created usually by diverging or converging plates </li></ul><ul><li>Trench – deep steep side Canyons </li></ul>
  13. 20. Ocean Geography: 3. Land & Water Features
  14. 21. Bay <ul><li>A body of water surrounded on three sides by land </li></ul>
  15. 22. Strait/Sound <ul><li>Water passage that connects two bodies of water or water ways </li></ul>
  16. 23. Delta <ul><li>A landform created from the deposits of a river as it enters a sea or ocean </li></ul>
  17. 24. Sea <ul><li>Usually a large body of salty water connected to an ocean </li></ul>
  18. 25. Cape <ul><li>A long pointed piece of land that sticks out into an ocean, lake, or sea </li></ul>
  19. 26. Peninsula <ul><li>A piece of land surrounded on three sides by water </li></ul>
  20. 27. Lake <ul><li>Body of water surrounded on all sides by land, very large ones are sometimes called seas </li></ul>
  21. 28. Fjord <ul><li>Long narrow sea inlet border on the sides by steep cliffs </li></ul>

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