Chapter 15 Quiz
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Miami Dade College, Kendall *
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Course
100
Subject
Geography
Date
Feb 20, 2024
Type
docx
Pages
6
Uploaded by KidWildcat1954
100
Question 1
Upwelling zones are frequently dead zones because high nutrients produce biologic activity leading to anoxic water conditions.
True
False
Question 2
Waves in the open ocean are called waves of oscillation.
True
False
Question 3
Longshore sand transport and longshore currents depend on waves impinging parallel to a shoreline.
True
False
Question 4
The daily tidal range is GREATEST during what period of the lunar cycle?
full moon
first quarter
new moon
full moon and new moon
100
Question 5
El Niño is a well known-weather phenomenon. In Ecuador and Peru, fisherman knew about the phenomenon long before it was well known because their fishing would be very poor during El Niño conditions. Normally Peru and Ecuador have a remarkable fishery because there is a prominent upwelling along the coast which produces plantonic blooms that feed the entire ecosystem. This upwelling is driven by surface wind conditions. From your knowledge of currents and wind conditions, which of the following happens during El Niño conditions in this area?
The winds shift from west to east (onshore flow) to offshore flow (east to west) during El Niño conditions.
The winds shift from south to north, along the coast, to west to east, across the coast.
The winds change from east to west (offshore flow) to onshore flow or weak winds during El Niño conditions.
The winds shift from prevailing southwesterlies to stagnant, doldrum conditions during El Niño
Question 6
As a fluid (air or water) moves toward an area of lower pressure in the Northern Hemisphere, the Coriolis effect results in counterclockwise circulation.
True
False
Question 7
Because of the Coriolis effect, surface ocean currents are deflected to the ________ of their path of motion in the Northern Hemisphere.
left
right
east
west
Question 8
The east and west coasts of the North America have very different temperatures at the same latitude primarily because of ocean currents.
True
False
100
Question 9
The Coriolis effect causes ocean currents in the Southern Hemisphere to be deflected to the right of their path of motion.
True
False
Question 10
Construction of a seawall produces an effect analogous to what kind of natural coastal feature?
a sea cliff producing erosion at the base of the sea cliff (i.e., the seawall)
a spit, formed by sand moving by longshore drift accumulating along the opening of a tidal channel
a barrier island, which forms an artificial beach at the front of the seawall
an island offshore breaking waves and trapping sand behind to form a tombolo
Question 11
You are interested in buying a piece of land overlooking the sea. You find a place atop a 50m high sea cliff. The lot is only about 30m wide but is 200m long parallel to the coast, so you think you are getting a large expanse of the coastline. What would be the most important thing to look for in considering this purchase?
the view
accessibility of the beach
quality of the beach
the stability of the sea cliff, rock type, etc.
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100
Question 12
The Bermuda high is a large, persistent high pressure system centered roughly on the island of Bermuda in the mid-Atlantic, hence the name. Air circulates clockwise around high pressure systems
because of the Coriolis effect. Is there any connection between Atlantic Ocean currents and this weather feature?
No, North Atlantic circulation is clockwise, but the connections to the Bermuda high circulation are only circumstantial; the ocean circulation is a bigger feature.
No, the North Atlantic Ocean circulation is counterclockwise, like all Northern Hemisphere gyres.
Yes, North Atlantic circulation is approximately the same as the long term average circulation of
the Bermuda high.
Yes, they are crudely correlated, but the weather systems are so chaotic that the correlation is not meaningful.
Question 13
The zigzag movement of sand grains along a beach is ________.
caused by obliquely breaking waves
called beach drift
very unusual and seldom occurs
both caused by obliquely breaking waves and called beach drift
Question 14
When sea ice forms in high latitudes, the sea ice has ________.
lower salinity than the ocean waters it forms from
higher salinity than the ocean waters it forms from
the same salinity as the ocean waters it forms from
It depends on the temperature. If conditions are far below freezing, the salinity is the same as the adjacent seawater; if it is close to freezing, the ice is essentially fresh water
Question 15
If you are a sunbather sitting high and dry on a beach, sipping your drink and watching the waves roll in, you are on ________.
the foreshore
a backshore berm
the shoreline
Any of these
100
Question 16
Although the Sun influences the tides, its effect is considerably less than the effect of the Moon.
True
False
Question 17
An isolated remnant of wave erosion is a ________.
spit
sea stack
groin
jetty
Question 18
If you go to a beach in the continental United States and you are standing on a long, flat strand of sand, and you look away from the open ocean and see only a few low sand dunes and then a large, open waterway, where are you?
on a surfing beach in California
on a the Oregon coast at the mouth of river
on a barrier island on the Florida Gulf Coast
You must be on a Pacific Island; there is nothing like that on U.S. coastlines.
Question 19
A barrier island is a static feature that has been unchanged for thousands to hundreds of thousands
of years.
True
False
Question 20
The Gulf Coast lacks barrier islands.
True
False
100
Question 21
A spring tide occurs ________.
twice a year at the new or full moon closest to the vernal and autumnal equinox
once a year at the first full moon after the vernal equinox
about 26 times per year, at every full and new moon
once a month, or 12 times a year
Question 22
A baymouth bar is a manmade feature designed to control wave erosion.
True
False
Question 23
As the tide rises, water flows in toward the shore as the ebb tide.
True
False
Question 24
When prevailing winds blow from onshore to offshore, what generally happens?
The wind drives a longshore current, which draws cold air from higher latitudes, producing a cold climate.
The wind drives the water away from shore, forcing the water to descend in a downwelling zone.
The dry conditions from the land evaporate surface waters, making them more dense due to salinity increase, and they sink.
The winds cause offshore surface water to flow away from shore, forcing deeper water to rise to the surface.
Question 25
Rock breakwaters will produce erosion of beaches on the lee side of the breakwater.
True
False
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