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Aquatic Science Spring Final Review 2015 Part 2
Test Description: Final review for spring final 2015 / there are multiple parts to the final review
Instructions: Answer all questions to get your test result.
1) of organic origin; made by organisms
A
biogenous sediments
B
terrigenous sediments
C
hydrogenous sediments
2) arrive in the ocean from continents via rivers
A
hydrogenous sediments
B
terrigenous sediments
C
biogenous sediments
3) In volume and quantity, most marine sediments are associated with:
A
mid-ocean ridges
B
the continental slopes and rises
C
the deep sea floor away from the continental slopes
D
the edges of the deep trenches
4) The wavelengths of light that penetrate deepest into the ocean are:
A
red and violet
B
all wavelengths penetrate equally efficiently
C
green and blue
D
blue and brown
5) The densest seawater is the
A
freshwest
B
coldest
C
saltiest
D
coldest and saltiest
6) The most pronounced thermoclines exists in:
A
the polar regions
B
the temperate zones
C
the tropics
D
anywhere-it depends on water salinity
7) The speed of sound in water is ____________ the speed of sound in air.
A
lower than
B
greater than
C
about the same as
D
sometimes lower, sometimes higher - depends of temperature of air and wter
8) The term salinity refers to
A
the total amount of chlorine in the water
B
the total amount of table salt dissolved in seawater
C
the total amount of chloride ion in the water
D
the total amount of dissolved solids in the ocean
9) Once an element or dissolved substance reaches the ocean,
A
it may stay or be removed depending on the individual chemistry of the element
B
it will be removed quickly by activities of organisms
C
it will remain dissolved in the water forever
D
it will settle to the seafloor in less than 100 years
10) We can determine salinity if we know
A
the chlorinity of the water sample
B
the mass of the water sample
C
the density of the water sample
D
the exact color of the water sample
11) The salinity of the ocean, at the present time, seems to be
A
increasing due to evaporation as the Earth warms up
B
decreasing due to several years of excessive rainfall
C
increasing due to pollution
D
in equilibrium, with dissolved components entering equal to dissolved components leaving
12) Seasons are caused by
A
the Earth's orbital tilt relative to the plane of its orbit around the sun
B
annual variation in energy output of the sun
C
changes in the weather
D
our being closer to the sun in summer
13) The Coriolis effect causes objects moving in the northern hemisphere to veer off course
A
in a downward direction
B
to the right, or clockwise when viewed from above
C
in an upward direction
D
to the left, or counterclockwise when viewed from above
14) Winds generally move across the United States
A
from west to east
B
from south to north
C
from north to south
D
from east to west
15) A system of four currents completing a flow circuit around the periphery of an ocean basin is collectively called
A
a gyre
B
a Carroll pattern
C
a gimble
D
a cell
16) The immediate source of most of the energy for ocean currents is:
A
wind
B
weather
C
the sun
D
the tides
17) During an El Nino event,
A
the central eastern Pacific ocean becomes cooler
B
a strong equatorial countercurrent develops in the Pacific
C
sea level falls in the central eastern Pacific ocean
D
the trade winds stregthen
18) The main force driving thermohaline circulation is
A
gravity
B
electromagnetic attraction
C
wind
D
Coriolis effect
19) The distance measured from trough to trough of a wave is
A
the wavelength
B
the orbit
C
the wave period
D
the wave height
20) The period of wind waves is usually expressed in
A
miles per hour, or kilometers per hour
B
any of the above
C
feet or meters
D
seconds
*select an answer for all questions
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