Reference no: EM133514960

Assignment:

Origins: Part 1-Making North America

While you watch the video, please answer the following questions in a computer document.

1. How long is the Grand Canyon (in miles)?
2. What was the environment like 300 million years ago when the Esplanade sandstone at the top of the Grand Canyon was deposited?
3. About 1,000 feet below the rim of the canyon, the rock changes to fossiliferous limestone. What do the fossils tell us about the environment at that time?
4. 340 million years ago, a warm shallow sea covered the American Southwest. How did the marine organisms living in the sea form the limestone rocks that we see today in the Grand Canyon?
5. What kind of rocks are found at the bottom of the Grand Canyon?
6. How long ago did the oldest rocks on our planet form?
7. How did all land on our planet start? What type of rock is this?
8. Basalt is a dark, heavy rock found on ocean floors and ocean crust and in ocean islands like Hawaii. What type of rock, which is lighter colored and lighter in weight than basalt, makes up the continents?
9. Describe how this lighter rock is formed.
10. What rock, mined in Thunder Bay, Ontario, is 35 times more rare than gold?
11. How many miles of volcanic rock are under Lake Superior?
12. Is the ground under Manhattan, New York, hard or soft?
13. What is schist made from (how did it start its "life")?
14. Explain why there is a gap with much smaller buildings between the group of tall buildings in the midtown of Manhattan and the second clump of skyscrapers in downtown Manhattan?
15. What type of geological feature was found in place of skyscrapers in Manhattan 440 million years ago?
16. What happened to it?
17. What great geologic truth does this reveal?
18. The cliffs of Zion Canyon, in Utah, are up to 2,000 feet tall. What was the environment like 200 million years ago during the Jurassic?
19. How did the gigantic mountain range in the middle of the megacontinent Pangea impact the climate in what is now North America.
20. What happened to North America as it drifted northward?
21. Did the Rocky Mountains form only once, or have they formed many times?
22. What type of fossil did they find while searching in the tide pools?
23. Where did they find this fossil (in what state)?
24. What is it doing so far north?
25. Name the two plates on either side of the San Andreas fault.
26. As a result of these two adjacent plates sliding, each in the opposite direction, what two major California cities will eventually be neighbors?