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Earth Science 14
Earth Science 14
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1
Which of these forms of sea life are thought to take advantage of ocean currents in their efforts to move about?
all of these
plankton
European eels
humpback whales
2
The major warm current located in the West Atlantic Ocean is the
Humboldt Current.
Bermuda Current.
Canary Current.
Gulf Stream.
3
The moon’s gravity causes the oceans to rise both on the near side and the far side of the earth
True
False
4
A current resulting from waves breaking at an angle to the shore
upwelling
longshore current
gyre
tides
5
In the picture of a wave, what is G pointing to?
trough
wavelength
crest
amplitude
6
Which of these combines the effects of the Coriolis effect, current speed, and water depth to produce current direction?
density currents
Ekman spiral
coastal downwelling
oscillation
7
Upwelling has been observed only near the Equator due to its lower-than-average sea level
True
False
8
The distance that a wave blows over the water’s surface in one direction is the __ of the wave caused by the wind.
fetch
stack
wavelength
sea arch
9
Prevailing westerlies are winds that blow on an angle toward the poles, pushing surface water in a westerly direction
False
True
10
In the picture of a wave, what is A pointing to?
crest
trough
wavelength
amplitude
11
The very high tides that occur twice a month are caused by
shifting surface currents.
the sun, moon, and earth being arranged in a straight line.
the sun and moon being arranged at right angles to the earth.
the Coriolis effect.
12
A current resulting from waves breaking at an angle to the shore
breaker
tidal wave
rip current
longshore current
13
In the center of an ocean gyre, the sea level is usually
lower than outside the gyre.
higher than outside the gyre.
the same level as outside the gyre.
unrelated to the level outside the gyre.
14
Cold ocean currents along a coast can dry the air so much that a desert forms.
True
False
15
Which of these is
not
a term that would apply to thermohaline currents?
density currents
countercurrents
All of these would apply
subsurface currents
16
What usually has the greatest influence in causing tides?
the moon
the weather
the earth's core
the sun
17
The greatest number of drownings is probably caused by ___ currents.
turbidity
rip
longshore
downwelling
18
In the picture of a wave, what is E pointing to?
wavelength
trough
amplitude
crest
19
Which of these is most directly related to wave speed?
wave period
wave angle
wave amplitude
wave height
20
In the picture of a wave, what is F pointing to?
trough
crest
amplitude
wavelength
21
Water that is forced down by downwelling typically has ___ than surrounding waters.
less nutrients and less oxygen
more nutrients but less oxygen
more nutrients and more oxygen
more oxygen but less nutrients
22
The __ of a series of waves is the horizontal distance from the crest of one wave to the crest of the next wave.
fetch
stack
sea arch
wavelength
23
How many tides do most coasts experience in a typical 24-hour period?
two lows and two highs
one low and two highs
two lows and one high
one low and one high
24
The alternating rise and fall of local sea level
tides
gyre
longshore current
upwelling
25
An unstable wave whose crest is falling forward
longshore current
breaker
rip current
tidal wave
26
Twice each month, lower-than-usual tides, called __ tides, occur.
spring
gyre
turbidity
neap
27
What is "D" pointing to in the picture?
a point experiencing high tide
a point experiencing low tide
a bulge caused by the moon's gravity
a bulge caused by the inertia of the ocean water
28
Which of these would have the
least
effect on subsurface currents?
Downwelling
Ekman spiral effect
density differences
prevailing winds
29
Most power plants designed to harness the power of tidal changes are fairly small
False
True
30
If you want to sail around the globe but remain south of Africa and South America, what single current could you use?
Peru Current
Atlantic Current
Antarctic Circumpolar Current
South Equatorial Current
31
What is "F" pointing to in the picture?
a point experiencing low tide
a bulge caused by the inertia of the ocean water
a point experiencing high tide
a bulge caused by the moon's gravity
32
Cold water rising to the surface
longshore current
tides
gyre
upwelling
33
What is "B" pointing to in the picture?
a point experiencing low tide
a bulge caused by the inertia of the ocean water
a point experiencing high tide
a bulge caused by the moon's gravity
34
What is "A" pointing to in the picture?
a point experiencing high tide
a bulge caused by the inertia of the ocean water
a bulge caused by the moon's gravity
a point experiencing low tide
35
A(n) _ current is a type of density current that carries a great amount of sediment and acts like an underwater mudslide
turbidity
spring
gyre
neap
36
In the picture of a wave, what is C pointing to?
crest
wavelength
amplitude
trough
37
The Great Pacific Garbage Patch is the result of man’s carelessness and a strong oceanic __ .
gyre
turbidity
neap
spring
38
A(n) __ is a mass of rock that has been cut off from the mainland by erosion
fetch
stack
sea arch
wavelength
39
In the picture of a wave, what is B pointing to?
crest
wavelength
amplitude
trough
40
A strong, narrow surface current that carries water from the shore to the sea
longshore current
breaker
tidal wave
rip current
41
In the picture of a wave, what is D pointing to?
wavelength
crest
amplitude
trough
42
Waves generally move water great distances.
True
False
43
Which of these is defined as the deepest depth below the ocean’s surface that is affected by the wave's passage?
wave period
wave height
wave base
wavelength
44
What is "C" pointing to in the picture?
the center of revolution for the earth-moon system
a point experiencing high tide
a point experiencing low tide
the center of the earth's rotation
45
Currents are affected by the rotation of the earth.
True
False
46
What is "E" pointing to in the picture?
a point experiencing low tide
the center of revolution for the earth-moon system
the center of the earth's rotation
a point experiencing high tide
47
A circular flow of currents within an ocean basin
longshore current
gyre
upwelling
tides
48
Generally speaking, the longest waves have the greatest speeds.
False
True
