Ocean Geography

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Across
  1. 4. What is the newest ocean
  2. 5. Area where magma is rising from the mantle
  3. 10. least dense layer of Earth
  4. 11. what is the smallest ocean
  5. 14. Dense Crust made of Basalt
  6. 15. How many major plates are there
  7. 18. The study of ocean depths
  8. 19. Thickest layer of the Earth
  9. 21. Small Land Area surrounded by water
Down
  1. 1. Line that divides East and West hemispheres
  2. 2. Boundary where two plates are moving past each other
  3. 3. Boundary where two plates are moving toward each other
  4. 6. when oceanic crust goes under continental crust
  5. 7. Tool used to measure longitude at sea
  6. 8. Outermost layer of the Earth
  7. 9. Long horizontal parallel lines around the earth
  8. 12. Most Dense layer of the Earth
  9. 13. Boundary where two plates are moving apart
  10. 16. Line that divides north and south hemispheres
  11. 17. Long Narrow Deep Depression in oceanic crust
  12. 20. Meridians going from pole to pole
  13. 22. Sound Navigation and Ranging