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Aquatic Science Spring Final Review 2015 Part 1
Test Description: Review for final exam spring 2015 / remember there are multiple parts to the review
Instructions: Answer all questions to get your test result.
1) Which of the followings statements applies to resources from the sea?
A
They are less expensive to recover than from land
B
They are easier to recover than from the land
C
They are usually found in concentrated ores
D
They are in greater variety than minerals on land
2) All of the following resources are recovered from seawater except:
A
manganese nodules
B
salt
C
freshwater
D
bromine
3) The best fishing grounds are located
A
anywhere, because fish are migratory
B
in the middle of the open ocean
C
in tropical waters of the deep sea
D
in temperate waters over continental shelves
4) What accounts for most of the total value of world trade transported by sea?
A
oil
B
grain
C
passengers
D
finished goods
5) The only marine energy source being successfully exploited on a large scale is:
A
waves
B
salinity differences
C
tidal currents
D
thermal gradients
6) The most dangerous threat to the marine environment, overall, is probably
A
human population growth
B
refined oil spills
C
solid waste and synthetic pesticides
D
excessive greenhouse heating
7) The ozone layer is important because
A
it shields us and other organisms from ultraviolet radiation from the sun
B
it keeps the Earth warm in the coldness of space
C
ozone is important plant nutrient, especially critical to diatom growth
D
it shields us from dangerous X-rays from the sun
8) If hope exists for solution to environmental problems, it lies in
A
education
9) About what percentage of Earth's surface is covered by water?
A
66%
B
90%
C
75%
D
71%
10) The world ocean
A
plays a minor role in the weather and shape of landmasses of Earth
B
does not influence the way organisms live on land
C
is the dominant feature of Earth and most of its living organisms
D
is a common occurrence in the known universe
11) The best explanation for the failure to find all sunken ships is that
A
the ocean is too vast and largely unexplored
B
sunken ships completely decay underwater
C
the technology to find ships is too primitive
D
sunken ships cannot be found in very deep water
12) Earth is about
A
4.6 million years old
B
40 billion years old
C
4.6 billion years old
D
6,000 years old
13) Life on Earth most probably evolved
A
on land
B
in space
C
the sun will and our descendants (if any) will all freeze to death
D
in the ocean
14) What is the name of the outermost solid layer of Earth?
A
asthenosphere
B
hydrosphere
C
lithosphere
D
outer core
15) The youngest seafloor rocks are found:
A
nearest the continental slopes
B
near the rift valleys of the mid-ocean ridges
C
beneath the deep sea trenches
D
evenly distributed over the ocean basins
16) Which of the following statements does not correctly describe subduction zones?
A
They are marked by the presence of deep-sea trenches
B
They are belts of deep-focus earthquakes
C
They are zones where old seafloor descends into the crust and mantle
D
They are sites of crustal plates are diverging or pulling apart
17) The mid-ocean ridges are recognized as:
A
transform or later plate boundaries
B
convergent plate boundaries
C
subduction zones
D
divergent plate boundaries
18) The sediments that covers the greatest area of seabed
A
terrigenous sediments
B
hydrogenous sediments
C
biogenous sediments
19) The most abundant sediment in the ocean
A
hydrogenous sediments
B
terrigenous sediments
C
biogenous sediments
20) Generated in place, on the spot where we find them
A
biogenous sediments
B
hydrogenous sediments
C
terrigenous sediments
*select an answer for all questions
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