Sc 8: pp 180-183 Name:________

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Across
  1. 5. locations of coal deposits & past glacial activity provide climatic evidence for _______
  2. 6. hypothesis that today's continents were once a single land mass
  3. 7. these land features in Western Africa are the same age & composition as in eastern North America
  4. 11. Wegener called the supercontinent this
  5. 13. a change in the magnetic poles
  6. 15. in 1912, he proposed an idea that today's continents were once a single landmass
  7. 16. system of ideas that explains many related observations
  8. 17. process by which new sea floor forms
Down
  1. 1. process by which one tectonic plate is pulled beneath another plate
  2. 2. Alexander du Toit suggested that Pangea separated into these two areas
  3. 3. large pieces of ice
  4. 4. _________ of sea floor rock helped confirm that the sea floor is spreading
  5. 8. Earth's outer layer
  6. 9. Earth's surface is made up giant, moving slabs
  7. 10. a map maker that first noticed that continents had coastlines that matched up
  8. 12. the amount of continents we know today
  9. 14. most active volcanoes are found near ________