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The length of recorded history for humankind

Question # 00111191
Subject: Geology
Due on: 11/01/2015
Posted On: 10/02/2015 03:01 PM

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GEOL 1021: Assignment #1 Fall 2013

Answer all the following Questions

1. The length of recorded history for humankind is about 5000 years. Clearly, most people view this span as being very long. How does it compare to the length of geologic time? Calculate the percentage or fraction of geologic time that is represented by recorded history. To make calculations easier, round the age of Earth to the nearest billion. 5 marks

2. After entering a dark room, you turn on a wall switch, but the light does not come on. Suggest at least three hypotheses that might explain this observation. Once you have formulated your hypotheses what is the next logical step? 10

3. How is the Earth’s inner core different from its outer core? 5

4. The Earth is considered a dynamic planet, compared to the Moon or Mercury. Why? 10

5. The moon has virtually no magnetosphere. Why? 10

6. Explain how the principle of uniformitarianism allows for catastrophic events. 8

7. The concentric layer that makes up most of Earth’s volume— is it? 2

A. the inner core B. outer core C. mantle D. Asthenosphere E. crust

Note:

· Read all questions carefully

· Answers must be type-written

· You require a cover page. The cover page should have the following: course code and assignment number, name of student (s), and date of submission.

· Use the class notes, textbook, and any other referenced source to answer the questions. (Some of your answers may come from critical analyses more than direct answers from a source.)

· You may work in groups. The maximum number of students in a group is three. You may elect to work alone.

· This assignment is due by the close of Friday, October 18, 2013.

· Use the assignment drop box.

· Assignments submitted after midnight, Friday, October 18,will not be accepted (without prior permission from the instructor).

· This is not an essay assignment.

Total Marks: 50

Tags humankind history recorded length core earth source work time geologic hypotheses does explain outer moon cover page number friday answers following aignment length october yourequire instructor aignmenttotal course andaignment prior student permiion code typewritten

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Tutorial Preview …Earth xx regularly xxxxxxxx as well xxxx can create xxxx subtle xxx xxxxxx changes xx the plane x The moon xxx virtually xx xxxxxxxxxxxxx Why? xx Ans Moon xxx very weak xxxxxxxx field xxx xx is xxxx than one-hundreth xx the earth’s xxxxxxxx field xxxx xx why xxxx has virtually xx magnetosphere 6 xxxxxxx how xxx xxxxxxxxx of xxxxxxxxxxxxxxxxx allows for xxxxxxxxxxxx events Ans xxxxxxxxxxxxx was xxx xxxxxxxxxx philosophy xxxx guided peoples' xxxxxxxxxxxx of Earth xxxxx to xxx xxxx of xxxxxx Catastrophists believed xxxx Earth's landscape xxx been xxxxxx xxxxxxxxx by xxxxx catastrophes The xxxxxxxxxx of uniformitarianism, xxxxx was xxxx xxxx the xxxxxxxx of James xxxxxx in the xxxx 18th xxxxxxxx xxxxxx that xxx same processes xxxx mold Earth…
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Preview: what xx the xxxx logical step? xxx How is xxx Earth’s xxxxx xxxx different xxxx its outer xxxxxxxx The outer xxxx of xxxxx xx molten xxxxxxx the inner xxxx of earth xx solid xxxx xx due xx pressure difference xxxxxxx the two xxxxxx High xxxxxxxx xx the xxxxx core makes xx solid 4 xxx Earth xx xxxxxxxxxx a xxxxxxx planet, compared xx the Moon xx Mercury xxxx xxx Earth xx considered to xx dyamic planet xxxxxxx its xxxxxxx xx constantly xxxxxxxx Because the xxxxx is based xx tectonic xxxxxx xxxx regularly xxxxxx the surface xx the Earth xx regularly xxxxxxxx xx well xxxx can create xxxx subtle and xxxxxx changes xx xxx.....
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