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SCIN136 Midterm Exam (APUS)


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SCIN136 Midterm Exam (APUS)

Question 1 of 75
Early voyagers used a variety of observations to help guide them including:

Question 2 of 75

The scientific theory about the formation of the oceans is that they first formed from (the original source of the water):

Question 3 of 75

Besides the Navy the primary organizations who carry out "classified" or proprietary ocean research are:

Question 4 of 75

One use today of the Navy's SOSUS System is to monitor________ to prevent loss of life.

Question 5 of 75

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 of 75
The reason that ancient sailors had trouble calculating their
LONGITUDE is that they did not have reliable

Question 7 of 75
Sun is but one of billions of stars in the ________ galaxy.

Question 8 of 75
Earth is approximately how old?

Question 9 of 75
The determination of the age of rocks by studying the decay of isotopes is called:

Question 10 of 75
The boundaries or eras of 
geologic time units were first set by noting:

Question 11 of 75
This is another term for 
Greenwich Mean Time. Think also of the military version.

Question 12 of 75
Earth rotates ______ degrees of 
longitude each hour. Thus this is roughly equal to one time zone.

Question 13 of 75

Which is the largest of the oceans?

Question 14 of 75

The largest region of the Earth in terms of its volume is the:

Question 15 of 75
The reason the continents stick up higher than the ocean basins is that:

Question 16 of 75

The Theory of Plate Tectonics was first proposed by:

Question 17 of 75

About 250 million years ago there was a single landmass we call:

Question 18 of 75

At various times in the Earth's history, North America has been part of which "supercontinent"?

Question 19 of 75
Among the evidence Wegener used to support his ideas was:

Question 20 of 75

The MAJOR force or mechanism driving plate movements would be:___________________. Thus an earthquake can occur anywhere on Earth.

Question 21 of 75

The site down INSIDE the Earth where an earthquake/seismic event begins is called the:

Question 22 of 75

Spreading rates for plates are on the order of:

Question 23 of 75
Besides paleomagnetism one of the largest sets of 
"proof" for plate tectonics are:

Question 24 of 75
Japan, the Marinas, Gilbert and other areas near the deep sea trenchs are called:

Question 24 of 75
Japan, the Marinas, Gilbert and other areas near the deep sea trenchs are called:

Question 25 of 75

The scientific justification for burying radioactive waste in the trenches is that:

Question 26 of 75
The life span of a 
hot spot is thought to be about __________ years.

Question 27 of 75
A good example of a 
hot spot is:

Question 28 of 75

Which of the following places are part of the Mid-Atlantic Ridge?

Question 29 of 75

Which of the following locations is LEAST likely to have a major earthquake due to its location?

Question 30 of 75

The place where seismic/earthquake waves come to the surface and is thus usually the center of rthe damage area and gets reported in the news is called the:

Question 31 of 75

Deep-sea volcanic vents are called:

Question 32 of 75

Bermuda is an example of what oceanographers call:

Question 33 of 75

The deepest point in the oceans is found in the

Question 34 of 75

Which of the following has the greatest influence on the pattern of sediment distribution on the ocean floor?

Question 35 of 75
An underwater 
mudslide down the continental slope is called a:

Question 36 of 75

Manganese nodules are found MOSTLY (the main source) in the deep areas of which of the following oceans?

Question 37 of 75

The reason that manganese nodules are found in large quantities in the central Pacific and Indian Oceans is:

Question 38 of 75
Law of the Sea Treaty was proposed by:

Question 39 of 75
UNCLOS Treaty contains provisions that cover which of the following?

Question 40 of 75

The Hadal Zone is found at which of the following oceanic features?

Question 40 of 75
Hadal Zone is found at which of the following oceanic features?

Question 41 of 75
The average salinity of the oceans is about ______ 0/000.

Question 42 of 75
Deep water is often rich in:

Question 43 of 75

The density of seawater increases with:

Question 44 of 75
Which of these physical forces travels the 
greatest distance in seawater?

.Question 45 of 75

Changes in the density of seawater are caused mostly by changes in:

Question 46 of 75

Oxygen is put into seawater primarily by the process of:

Question 47 of 75

The main reasons that there is an increase in oxygen in deep ocean water is that:

Question 48 of 75
Which of these is the major cause of the layering of the water column in the di
fferent "zones" of the oceans?

Question 48 of 75
Which of these is the major cause of the layering of the water column in the di
fferent "zones" of the oceans?

Question 49 of 75

Which of these places has the highest albedo?

Question 50 of 75
The worst season (when they would be the greatest hazard) for icebergs in the North Atlantic would be:

Which of the following countries owns a large territory that gives it considerable coastline on the Arctic Ocean?

Question 52 of 75
Icebergs float with only about ______ percent of their mass above water.

Question 53 of 75
The main interest by countries competing in the 
Arctic Ocean is:

A.undersea oil exploration
B.underwater cable laying
C.deep-sea mining operations for metal-sulfides from black smokers resource research
E.beach resort development

Question 54 of 75
Which of the following navigation instruments WOULD NOT work well in the 

Question 55 of 75 Continentality causes:

The maximum seasonal change in sea surface temperature, which occurs anywhere in the world ocean is about:

Question 57 of 75
In which of these places maximum seasonal change in sea surface temperature, would be seen?

Question 58 of 75

The Coriolis Effect is caused by:

Question 59 of 75
The Coriolis e

Question 60 of 75

The areas of constant high air pressure on land most likely result in what type of climate in these areas?

Question 61 of 75
The continential United States (the Lower 48) lies in the _________ prevailing wind belt.

Question 62 of 75

The region of rising air at the Equator is called the:

Question 63 of 75

A strong wind at high LATITUDES that influences weather patterns is called (can bring really frigid weather in winter):

Question 64 of 75

In the vicinity of Hawaii, the Trade Winds blow:

Question 65 of 75
Hurricanes and typhoons 
cannot cross the Equator due to:

Question 66 of 75

Hurricane season in most years in the North Atlantic is from:

Question 67 of 75

The seasonal wind changes that create the wet and dry seasons forSouth Asia due to the winds blowing from the ocean or towards the ocean and thus affect the food supply for millions of people are called:

Question 68 of 75
Tornadoes develop from which of the following weather phenomenon?

Which of the following modes of transportation causes the greatest exposure to short-wave ionizing radiation?

Question 70 of 75

Which of the following events would have the largest and most long-lasting impact upon the Peruvian upwelling?

Question 71 of 75

Which of the following navigational routes might become a major shipping route due to possible climate change?

Question 72 of 75
Which of the following navigational routes and its sea-lanes is currently the most problematic due to 

Question 73 of 75
El Niño effects which of these phenomenon:

Question 74 of 75

The El Nino cycles seem to occur every (how often do the occur):

Question 75 of 75

La Niña weather patterns are associated with which of the following?

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