<p>Plate Tectonic Internet Activity Name ______</p><p>Go to http://volcano.und.nodak.edu/vwdocs/vwlessons/plate_tectonics/part1.html (Notice that there is no www in the address). Answer the following questions.</p><p>1. What the three chemical layers of the earth?</p><p>2. What elements constitute the cores? </p><p>3. What is the difference between the inner and out cores?</p><p>4. What elements make up the mantle (list all 4)?</p><p>5. What elements make up the crust?</p><p>6. ______crust is made mostly of basalt, whereas ______is mostly made of ______and granite. 7. Which crust is denser?</p><p>8. What are the two parts to the lithosphere?</p><p>9. What solid layer can flow?</p><p>10. Next. Who originally proposed the theory of Continental Drift?</p><p>11. What were the five items he used to support hi theory?</p><p>12. What was the name of the super-continent?</p><p>13. Next. What continents was a fern located on?</p><p>14. Next. How did he use the rock sequence as evidence for his theory? Explain.</p><p>15. Next. Which continents (5) had glaciations?</p><p>16. Look at the present day climate zones. Ice is found at ______latitudes.</p><p>17. What are his two possible explanations for the glaciers on these five continents?</p><p>18. What was his final conclusion regarding the continents and the glaciers?</p><p>19. What is polar wandering? 20. What actually moves poles or plates?</p><p>21. Next. Give two contradictory beliefs to continental drift.</p><p>22. Why was his work not accepted by most in the Northern Hemisphere?</p><p>23. Who found the mechanism to move the plates?</p><p>24. What is the mechanism called?</p><p>25. Next. How deep and wide is the mid-Atlantic ridge?</p><p>26. Next. What did Harry Hess propose?</p><p>27. What produces the ocean floor?</p><p>28. Where did the floor go towards?</p><p>29. What is trench and give an example.</p><p>30. What moves the plates?</p><p>31. Next. Why do volcanic rocks have magnetization?</p><p>32. What differences did scientist find in the rocks?</p><p>33. What direction does the positive magnetism point?</p><p>34. What hemisphere does the negative magnetism point to?</p><p>35. Draw the zebra strip pattern that forms from the rift.</p><p>36. Next. ______in the mantle help carry the lithosphere ______the ridge. The lithosphere arrives at the ______, where it is ______or ______into the asthenosphere. Thus, oceanic lithosphere is ______at mid-ocean ridges and ______at subduction zones, areas where the lithosphere sinks into the asthenosphere. ______are generated in the rigid plate as it is ______into the ______</p>