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SCIN 136 Midterm Exam Answers
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SCIN 136 Midterm Exam Answers
Question 1
Early voyagers used a variety of observations to help guide them including:
Question 2
The scientific theory about the formation of the oceans is that they first formed from (the original source of the water):
Question 3
Besides the Navy the primary organizations who carry out “classified”
Question 4
One use today of the Navy’s SOSUS System is to monitor________ to prevent loss of life.
Question 5
The two types of technology that are mostly used to monitor deep-water oil drilling and to locate and recover deep shipwrecks are:
Question 6
The reason that ancient sailors had trouble calculating their LONGITUDE is that they did not have reliable
Question 7
Our Sun is but one of billions of stars in the ________ galaxy.
Question 8
Earth is approximately how old?
Question 9
The determination of the age of rocks by studying the decay of isotopes is called:
Question 10
The boundaries or eras of geologic time units were first set by noting:
Question 11
This is another term for Greenwich Mean Time. Think also of the military version.
Question 12
Earth rotates ______ degrees of longitude each hour. Thus this is roughly equal to one time zone.
Question 13
Which is the largest of the oceans?
Question 14
The largest region of the Earth in terms of its volume is the:
Question 15
The reason the continents stick up higher than the ocean basins is that:
Question 16
The Theory of Plate Tectonics was first proposed by:
Question 17
About 250 million years ago there was a single landmass we call:
Question 18
At various times in the Earth’s history, North America has been part of which “supercontinent”?
Question 19
Among the evidence Wegener used to support his ideas was:
Question 20
The MAJOR force or mechanism driving plate movements would...