Question 1

What is a beach? Define the term and describe features and processes that may bound the limits of a beach.

Accepted Answer

A beach is a zone of loose particles tha

Question 2

Short extensions of rock or other material that are placed at right angles to longshore drift to stop the longshore transport of sediments are called ____.

Accepted Answer

A) berms 
B) seawalls 
C) groins 
D) dolos 
A) berms 
B) seawalls 
C) groins 
D) dolos

Question 3

Which statement is true concerning estuaries?

Accepted Answer

A) Organisms cannot survive in estuaries. 
B) Estuaries are very vulnerable to pollution. 
C) The salinity in estuaries is stable, with very little fluctuation. 
D) An estuary is a type of delta. 
A) Organisms cannot survive in estuaries. 
B) Estuaries are very vulnerable to pollution. 
C) The salinity in estuaries is stable, with very little fluctuation. 
D) An estuary is a type of delta.

Question 4

Barrier islands were once part of the mainland when sea levels were lower.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following best describes the foreshore of a beach?

Accepted Answer

A) It is the active zone of the beach that is washed by waves during the daily rise and fall of the tides. 
B) It is highest part of a beach. 
C) It is the part of the beach that has windblown dunes and grasses. 
D) It is the area bellow the low-tide mark, where wave action, turbulent backwash, and longshore currents excavate a trough. 
A) It is the active zone of the beach that is washed by waves during the daily rise and fall of the tides. 
B) It is highest part of a beach. 
C) It is the part of the beach that has windblown dunes and grasses. 
D) It is the area bellow the low-tide mark, where wave action, turbulent backwash, and longshore currents excavate a trough.

Question 6

Deep, narrow bays that are often formed by tectonic forces and later modified by glaciers are called ____.

Accepted Answer

A) lagoons 
B) drowned river mouths 
C) fjords 
D) bay mouth bars 
A) lagoons 
B) drowned river mouths 
C) fjords 
D) bay mouth bars

Question 7

One mechanism by which sediments are transported in the surf zone is via longshore currents.

Accepted Answer

A) True 
 B)False

Question 8

Which statement is true regarding the Florida Keys?

Accepted Answer

A) They were formed during an ice age period. 
B) They are an example of an erosional coast. 
C) They are an example of a coast formed by biological activity. 
D) They are completely below sea level. 
A) They were formed during an ice age period. 
B) They are an example of an erosional coast. 
C) They are an example of a coast formed by biological activity. 
D) They are completely below sea level.

Question 9

Depositional coasts are growing because of sediment accumulation or the action of living organisms.

Accepted Answer

A) True 
 B)False

Question 10

Marine erosion is usually most rapid on low-energy coasts.

Accepted Answer

A) True 
 B)False

Question 11

A(n)____ is a bridge of sediment that connects a sea island to the mainland.

Accepted Answer

A) inlet 
B) tombolo 
C) sand spit 
D) bay mouth bar 
A) inlet 
B) tombolo 
C) sand spit 
D) bay mouth bar

Question 12

On high energy shores ____ does most of the erosional work.

Accepted Answer

A) wave action 
B) the tidal range 
C) alternate freezing and thawing of coastal cliffs 
D) prevailing wind 
A) wave action 
B) the tidal range 
C) alternate freezing and thawing of coastal cliffs 
D) prevailing wind

Question 13

Beaches with very fine-grained sediments tend to be ____.

Accepted Answer

A) relatively steep 
B) relatively flat 
C) most common along erosional coastlines 
D) in areas where the coast is rapidly rising or sinking 
A) relatively steep 
B) relatively flat 
C) most common along erosional coastlines 
D) in areas where the coast is rapidly rising or sinking

Question 14

A longshore bar is a vertical wall of sand delineating the low-tide mark.

Accepted Answer

A) True 
 B)False

Question 15

Human activities that can significantly contribute to shoreline erosion include ____.

Accepted Answer

A) building sand dunes near the backshore to protect property 
B) importing sand to beaches from offshore 
C) placement of seawalls along the shoreline 
D) excess fishing and boating activities 
A) building sand dunes near the backshore to protect property 
B) importing sand to beaches from offshore 
C) placement of seawalls along the shoreline 
D) excess fishing and boating activities

Question 16

The Ganges-Brahmaputra delta is an example of a wave-dominated delta.

Accepted Answer

A) True 
 B)False

Question 17

A long-term effect of wave refraction is ____.

Accepted Answer

A) to smooth and straighten a shoreline 
B) to add sediment to headlands that extend outward from the shore 
C) to erode and deepen bays 
D) to remove sand from the beach 
A) to smooth and straighten a shoreline 
B) to add sediment to headlands that extend outward from the shore 
C) to erode and deepen bays 
D) to remove sand from the beach

Question 18

The highest point on a summer beach profile is the ____.

Accepted Answer

A) berm crest 
B) backshore 
C) foreshore 
D) low-tide terrace 
A) berm crest 
B) backshore 
C) foreshore 
D) low-tide terrace

Question 19

Steep sea cliffs on erosional coasts are usually caused by ____.

Accepted Answer

A) exposure of these features due to a drop in sea level 
B) deposition of large amounts of sediment by waves 
C) glacial erosion 
D) the collapse of undercut notches of exposed bedrock 
A) exposure of these features due to a drop in sea level 
B) deposition of large amounts of sediment by waves 
C) glacial erosion 
D) the collapse of undercut notches of exposed bedrock

Question 20

How have human activities influenced coastal processes? Provide a specific example.

Accepted Answer

Human construction of structures such as

What is a beach? Define the term and describe features and processes that may bound the limits of a beach.

Short extensions of rock or other material that are placed at right angles to longshore drift to stop the longshore transport of sediments are called ____.

Which statement is true concerning estuaries?

Barrier islands were once part of the mainland when sea levels were lower.

Which of the following best describes the foreshore of a beach?

Deep, narrow bays that are often formed by tectonic forces and later modified by glaciers are called ____.

One mechanism by which sediments are transported in the surf zone is via longshore currents.

Which statement is true regarding the Florida Keys?

Depositional coasts are growing because of sediment accumulation or the action of living organisms.

Marine erosion is usually most rapid on low-energy coasts.

A(n)____ is a bridge of sediment that connects a sea island to the mainland.

On high energy shores ____ does most of the erosional work.

Beaches with very fine-grained sediments tend to be ____.

A longshore bar is a vertical wall of sand delineating the low-tide mark.

Human activities that can significantly contribute to shoreline erosion include ____.

The Ganges-Brahmaputra delta is an example of a wave-dominated delta.

A long-term effect of wave refraction is ____.

The highest point on a summer beach profile is the ____.

Steep sea cliffs on erosional coasts are usually caused by ____.

How have human activities influenced coastal processes? Provide a specific example.

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Life in the Ocean

Pelagic Communities

Benthic Communities

Uses and Abuses of the Ocean

Filters

Exam 11: Coasts

What is a beach? Define the term and describe features and processes that may bound the limits of a beach.

Short extensions of rock or other material that are placed at right angles to longshore drift to stop the longshore transport of sediments are called ____.

Which statement is true concerning estuaries?

Barrier islands were once part of the mainland when sea levels were lower.

Which of the following best describes the foreshore of a beach?

Deep, narrow bays that are often formed by tectonic forces and later modified by glaciers are called ____.

One mechanism by which sediments are transported in the surf zone is via longshore currents.

Which statement is true regarding the Florida Keys?

Depositional coasts are growing because of sediment accumulation or the action of living organisms.

Marine erosion is usually most rapid on low-energy coasts.

A(n)____ is a bridge of sediment that connects a sea island to the mainland.

On high energy shores ____ does most of the erosional work.

Beaches with very fine-grained sediments tend to be ____.

A longshore bar is a vertical wall of sand delineating the low-tide mark.

Human activities that can significantly contribute to shoreline erosion include ____.

The Ganges-Brahmaputra delta is an example of a wave-dominated delta.

A long-term effect of wave refraction is ____.

The highest point on a summer beach profile is the ____.

Steep sea cliffs on erosional coasts are usually caused by ____.

How have human activities influenced coastal processes? Provide a specific example.

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Life in the Ocean

Pelagic Communities

Benthic Communities

Uses and Abuses of the Ocean

Filters