Chapter 15

25 July 2022
4.7 (114 reviews)
80 test answers

Unlock all answers in this set

Unlock answers (76)
question
Which site will most likely experience rapid erosion?
answer
2, sediments in a delta
question
Which of the following is true about how coasts are affected from the water side?
answer
Waves can erode, deposit, or simply transport sediment.
question
Factors that do not affect the appearance of a coast from the water side include
answer
All of these affect the appearance.
question
Factors that affect the appearance of a shoreline include
answer
All of these are correct.
question
The orientation of a coastline affects the appearance of a shoreline primarily because it influences
answer
the erosive effects of waves.
question
Which of the following is true about how coasts are affected from the land side?
answer
Many beach areas are backed by coastal dunes formed by the wind
question
Climate influences the processes along coastal landscapes by
answer
All of these are correct.
question
With the Moon in this position, which area will experience high tide?
answer
2 and 4
question
With the Moon in this position, which area will experience low tide?
answer
1 and 3
question
With the Sun and Moon in this position, the side of the Earth facing the Moon experiences
answer
a spring tide.
question
With the Sun and Moon in this position, the side of the Earth facing the Moon experiences
answer
a neap tide
question
An area will experience high tide
answer
An area will experience high tide
question
High and low tides are caused by
answer
water being pulled by the gravity of the Moon.
question
There are two high tides and two low tides in each 25-hour period because
answer
Earth completes a full rotation every 24 hours but the Moon moves too.
question
High tides are higher than average and low tides are lower than average when
answer
All of these are correct
question
If waves approach the shore at an angle, they
answer
bend so they approach the shore more directly
question
Which numbered location in this figure would be the wave base?
answer
3
question
To which numbered depth would the effects of this wave likely reach?
answer
3
question
The depth of wave base is the same as
answer
the depth to which wave action extends.
question
Which of the following is true about how waves form and break upon the shore?
answer
Waves begin to change when they reach water shallower than wave base.
question
How do waves propagate across the water?
answer
The wave moves forward, but water moves in a circular motion
question
In a wave of oscillation, an individual water molecule near the surface will move
answer
in a larger vertical circle than a water molecule submerged deeper in the wave.
question
If multiple waves on the ocean are approaching the same point, but arriving from different directions, the result is most likely to be
answer
choppy seas.
question
Rip currents form because
answer
backwash occurs in a narrow zone.
question
If you are caught in a rip current, the best thing to do is to
answer
swim parallel to the shore
question
Which of the following parts of a coast is more likely to experience intense erosion?
answer
The seaward end of a promontory Correct
question
Which of the following can influence whether a coast gains or loses sand with time?
answer
All of these are correct.
question
Which of the following is not a possible source of large stones along a shoreline?
answer
Large storms eroding the deep seafloor and transporting the rocks toward the beach
question
Sand and other sediment
answer
can move laterally along the coast if waves approach the beach at an angle.
question
Which way is the current moving along this coastline?
answer
From right to left
question
This spit is a(n) _______ landform.
answer
depositional
question
If this spit continues to grow, cutting off the lagoon, it will become a
answer
baymouth bar.
question
The sea cave in this photograph formed by
answer
erosion of a promontory by waves.
question
This wave-cut platform indicates
answer
a lowering of sea level relative to the land.
question
What features are shown in this photograph?
answer
Pinnacles and sea stacks
question
Over time, a spit will grow
answer
in the same direction as a longshore current. Correct
question
Which of the following features is generally composed of bedrock?
answer
Wave-cut platform
question
The typical setting of a sea cave or sea stack is
answer
on a promontory.
question
Which of the following features was not an important process contributing to the formation of Cape Cod into its present-day shape?
answer
North to south longshore current
question
The small island on the lower right of this photograph is a(n)
answer
fringing reef
question
The left to right slope of the small island on the lower right of this photograph tells us that
answer
the ocean depth must be increasing to the right.
question
This feature is a(n)
answer
atoll
question
The feature pictured below formed as
answer
an island flanked by coral sank.
question
It has been proposed that the reason that the Pacific Ocean has many more coral reefs than the Atlantic Ocean is that
answer
the last glacial advance left the Atlantic too cold to allow coral to survive.
question
What was a key point demonstrated by photographs in the textbook from before and after hurricanes?
answer
Waves and storm surge caused erosion of beaches and destruction of houses
question
Which of the following is not an approach communities have tried to address shoreline problems?
answer
Lowering the local sea level
question
What is probably the least expensive approach for avoiding shoreline hazards?
answer
Forbidding the building of houses or other structures in high-risk areas
question
Which of the following does not affect the potential hazards of a shoreline?
answer
All of these affect potential hazards of shorelines.
question
What does LIDAR data tell us about shorelines?
answer
changes in elevation, including destruction of houses
question
What geologic event is probably indicated by this irregular coast, with estuaries?
answer
A rise in sea level
question
Which of the following most likely indicates that sea level has risen relative to the land?
answer
An irregular coastline with branching estuaries and embayments
question
Which of the following most likely indicates that the sea level has fallen relative to the land?
answer
All of these are correct.
question
An increase in the rate of seafloor spreading along this ridge would cause
answer
All of these are correct.
question
Which of the following would cause the sea level to rise?
answer
All of these are correct
question
What is the primary reason an increase in glaciation on land would cause sea level to fall?
answer
Glaciers tie up large volumes of water that would otherwise be in the sea.
question
How does the rate of seafloor spreading affect the sea level?
answer
Faster spreading produces broader ridges that displace water and expand the oceans.
question
What is the main way that position of the continents can influence global sea level?
answer
Continents at high latitudes provide a setting in which large ice sheets can form.
question
Which of the following would cause the sea level to fall?
answer
A slowing in the rate of seafloor spreading
question
What happens to the land surface when large ice sheets melt away?
answer
The land flexes upward due to isostatic rebound.
question
The diagram below represents which stage of the U.S. Geological Survey's model of beach erosion?
answer
Overwash regime
question
The diagram below represents a model that the U.S. Geological Survey (USGS) uses to categorize the extent of storm surge in the coastal zone. The red arrow in this figure points to
answer
the maximum height of the swash zone.
question
During a hurricane or other strong coastal storm, material on barrier islands can be moved from the seaward side to the side away from the sea in the process called
answer
overwash.
question
Three damaging hurricanes on the U.S. Atlantic and Gulf Coasts in 2011 or 2012 were
answer
Irene and Sandy on the Atlantic Coast and Isaac on the Gulf Coast
question
Chesapeake and Delaware Bays were both ______ before sea level rose and drown them approximately 20,000 years ago.
answer
stream valleys
question
What caused a relative rise in sea level along the East Coast of the U.S. approximately 20,000 years ago?
answer
Melting glaciers
question
Long Island and Cape Cod both were created from ______ and then later reworked by ______.
answer
glacial deposits; ocean waves
question
What location along the East Coast of the U.S. is a barrier island system, and as such, is very susceptible to erosion by hurricanes and other strong storms?
answer
The Outer Banks, NC
question
In the coastlines investigation, what coastline feature is represented by the very steep topography along the western coast (left side of island)?
answer
Sea cliffs
question
In the coastlines investigation, what coastline feature is represented by the flat bench above the west coast?
answer
Marine terrace
question
In the coastlines investigation, what coastline feature is represented by the area of sediment accumulation where a river meets the sea on the northern coast?
answer
Delta
question
In the coastlines investigation, what do the embayments along the eastern coast probably reflect?
answer
Submerged coastline
question
In the coastlines investigation, what coastline feature consists of the ridge of sand and the adjacent island along the south coast?
answer
Spit and sand bar
question
In the coastlines investigation, what coastline process is likely occurring at the cliffs along the western coast (left side of island)?
answer
Erosion of bedrock along the shoreline
question
In the coastlines investigation, what coastline process has likely occurred to form the flat bench above the west coast?
answer
Uplift of the land relative to sea level
question
In the coastlines investigation, what coastline process is likely occurring where the river meets the sea on the northern coast?
answer
Deposition of sediment from the land
question
In the coastlines investigation, what coastline process is likely occurring along the eastern part of the north shore?
answer
Transport of delta-derived sediment along the coast
question
In the coastlines investigation, what coastline process is likely occurring at the embayments long the eastern coast?
answer
Subsidence of the land relative to sea level
question
In the coastlines investigation, what coastline process is likely occurring to produce the ridge of sand and adjacent island along the south coast?
answer
Transport of sand and other sediment along the coast
question
Based on the features on this island in the coastlines investigation, what is the direction of waves and sediment transport?
answer
West to east
question
In the coastlines investigation, which of the following places on the island is the best place for a port?
answer
East side, in the embayments