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Homework 4

Due no later than midnight

After clicking submit a copy of your work will be sent to the email address you specified for your records.

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Answer the following questions. When you are finished click submit.

1.Distinguish between absolute and relative dating.

2. How are cross cutting relationships used in relative dating?

3. A mass of granite is in contact with a layer of sandstone. What principles might you use to determine whether the sandstone was deposited on top of the granite or whether the granite intruded the sandstone?

4. A radioactive isotope has a half life of 10,000 years. If the ration of Parent to daughter isotope within a given sample of rock is 1:3 how old is the rock?

5. If mountain ranges on opposite sides of the Atlantic were produced at the same time under the same conditions and in the same location, what would you expect to see within the rock structures?

6. List the evidence that Wegner and his supporters gathered in support of Continental Drift.

7.Explain why fossils of mesosaurus found in both South America and Africa supports the idea of Continental Drift.

8. Explain what is meant by the term paleomagnetism.

9. What information can be gained from studying paleomagnetism?

10. If mountain ranges on opposite sides of the Atlantic were produced at the same time under the same conditions and in the same location, what would you expect to see within the rock structures?

 

 

 

 

©2005 Sean Tvelia