Earth Science Terminology

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Across
  1. 2. Currents Occurs when there are differences in the temperature of water causing hot fluid to rise and cold fluid to sink
  2. 8. Plates The Earth’s crust is broken up into large pieces that move on the asthenosphere.
  3. 9. Plates Plates found underneath the land
  4. 10. Plates Plates found under the ocean
  5. 11. Plate Tectonic plate located under Africa
  6. 13. Plate Tectonic plate located under Australia
  7. 15. Outermost shell of the Earth
  8. 18. American Plate Tectonic plate located under South America
  9. 21. Includes the crust and the upper part of the mantle.It is divided into plates
  10. 23. Push Occurs when two plates move apart and molten magma rises up to fill the gap. As it cools it forces the older plates to move away (diverge)
  11. 24. Pull Occurs when the two plates collide and the denser plate sinks (with the help of gravity) into the mantle pulling the plate with it causing it to move
  12. 25. Wegener Proposed the theory of continental drift
Down
  1. 1. Puzzle Evidence that suggest the continents fit together like a jigsaw puzzle
  2. 3. American Plate Tectonic plate located under North America
  3. 4. Plate Tectonic plate located under Pacific Ocean
  4. 5. Ranges Evidence of CD that shows the mountain ranges on the border of North America, South America, Europe and Africa
  5. 6. Super continent where all the continents are joined.
  6. 7. Core Inner most layer of the Earth
  7. 12. Located between the crust and the outer core
  8. 14. Plate Tectonic plate located under Asia and Europe
  9. 16. Sediments carried by glaciers have been found in India, Australia, South America and Africa suggesting these continents had a cooler climate.
  10. 17. The semi-molten layer of the mantle directly below the lithosphere
  11. 19. Core Located between the inner core and the mantle
  12. 20. Evidence of CD that suggest animals could not have swam between continents.
  13. 22. of Continental Drift Theory that explains the gradual movement of continents across the earth’s surface