Question 1

Sea level has been rising globally over the past century due to expansion of upper ocean waters.

Accepted Answer

A) True 
 B)False

Question 2

When do waves begin to "feel the bottom"?

Accepted Answer

At a water

Question 3

Tidal bores have very steep fronts,up to several metres high.

Accepted Answer

A) True 
 B)False

Question 4

How can sea ice limit beach erosion?

Accepted Answer

By limiting the fetc

Question 5

How would you spot a rip-current from the shore?

Accepted Answer

A)  Look for an area where waves are moving towards the shore. 
B)  Look for an area where longshore are moving quickly parallel to the shore. 
C)  Look for an area of calm surrounded by breaking waves. 
D)  Look for an area of intense breaking waves. 
E)  Rip currents are not visible from the shore. 
A)  Look for an area where waves are moving towards the shore. 
B)  Look for an area where longshore are moving quickly parallel to the shore. 
C)  Look for an area of calm surrounded by breaking waves. 
D)  Look for an area of intense breaking waves. 
E)  Rip currents are not visible from the shore.

Question 6

Wave erosion is limited in much of the Arctic because

Accepted Answer

A)  there are no beaches. 
B)  the region is tectonically active. 
C)  sea level is consistently rising. 
D)  the whole coastline is rocky. 
E)  fetch is limited by sea ice. 
A)  there are no beaches. 
B)  the region is tectonically active. 
C)  sea level is consistently rising. 
D)  the whole coastline is rocky. 
E)  fetch is limited by sea ice.

Question 7

Under which of the following conditions will longshore drift occur?

Accepted Answer

A)  wave crests approaching parallel to the shoreline 
B)  wave crests approaching a rocky headland 
C)  wave crests approaching at an angle to the shoreline 
D)  wave crests higher than average 
E)  wave crests lower than average 
A)  wave crests approaching parallel to the shoreline 
B)  wave crests approaching a rocky headland 
C)  wave crests approaching at an angle to the shoreline 
D)  wave crests higher than average 
E)  wave crests lower than average

Question 8

Which of the following hard stabilizations is built parallel to shore and is intended to protect homes,cliffs,or bluffs?

Accepted Answer

A)  jetties 
B)  breakwaters 
C)  seawalls 
D)  beach nourishment 
E)  groins 
A)  jetties 
B)  breakwaters 
C)  seawalls 
D)  beach nourishment 
E)  groins

Question 9

Plunging breakers are produced

Accepted Answer

A)  when waves converge at a headland. 
B)  when waves diverge along a shoreline. 
C)  by a tidal bore. 
D)  when a wave encounters a steep beach. 
E)  when a wave encounters a gently sloping beach. 
A)  when waves converge at a headland. 
B)  when waves diverge along a shoreline. 
C)  by a tidal bore. 
D)  when a wave encounters a steep beach. 
E)  when a wave encounters a gently sloping beach.

Question 10

What is the difference between a plunging breaker and a spilling breaker?

Accepted Answer

Plunging breakers typically fo

Question 11

What is the difference between eustatic and relative sea level?

Accepted Answer

A)  Eustatic refers to the global sea level; relative refers to local sea level near land. 
B)  Eustatic refers to global sea level; relative refers to sea levels with respect to mid-ocean ridges. 
C)  Eustatic refers to sea levels that don't change; relative refers to local sea level. 
D)  Eustatic refers to sea levels that are advantageous for shipping; relative sea level refers to high and low tides. 
E)  There is no difference between them. 
A)  Eustatic refers to the global sea level; relative refers to local sea level near land. 
B)  Eustatic refers to global sea level; relative refers to sea levels with respect to mid-ocean ridges. 
C)  Eustatic refers to sea levels that don't change; relative refers to local sea level. 
D)  Eustatic refers to sea levels that are advantageous for shipping; relative sea level refers to high and low tides. 
E)  There is no difference between them.

Question 12

Coasts with long sandy beaches are more abundant in tectonically active areas.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is a "soft" engineering solution to coastal erosion?

Accepted Answer

A)  Raise houses on pilings, so erosion problems do not threaten the entire structure. 
B)  Build jetties to protect the entrances to harbors. 
C)  Build breakwaters to provide calm waters for boats to anchor. 
D)  Add sand to the beach to compensate for longshore drift loss. 
E)  Use riprap to build barriers to erosion. 
A)  Raise houses on pilings, so erosion problems do not threaten the entire structure. 
B)  Build jetties to protect the entrances to harbors. 
C)  Build breakwaters to provide calm waters for boats to anchor. 
D)  Add sand to the beach to compensate for longshore drift loss. 
E)  Use riprap to build barriers to erosion.

Question 14

What could cause a large change in eustatic sea level?

Accepted Answer

A)  tides 
B)  heavy storms 
C)  drought 
D)  global warming 
E)  earthquakes 
A)  tides 
B)  heavy storms 
C)  drought 
D)  global warming 
E)  earthquakes

Question 15

Which of the following is NOT a coastal hazard?

Accepted Answer

A)  sea-level rise 
B)  flooding 
C)  coastal erosion 
D)  tsunami 
E)  storm surges 
A)  sea-level rise 
B)  flooding 
C)  coastal erosion 
D)  tsunami 
E)  storm surges

Question 16

Rising sea level will increase coastal erosion hazards.

Accepted Answer

A) True 
 B)False

Question 17

Which type of wave would you expect to see on a barrier island on the West Coast of Canada?

Accepted Answer

A)  plunging breaker 
B)  spilling breaker 
C)  tidal wave 
D)  tsunami 
E)  divergent breaker 
A)  plunging breaker 
B)  spilling breaker 
C)  tidal wave 
D)  tsunami 
E)  divergent breaker

Question 18

Why does the direction of littoral transport differ markedly along different coastlines?

Accepted Answer

Because different coastlines h

Question 19

Wave orbits tend to decrease in size as the depth of the water decreases.Orbital motion essentially stops at a depth of

Accepted Answer

A)  2 times the wavelength. 
B)  0.5 times the wavelength. 
C)  At distance equivalent of the wavelength. 
D)  1 meter. 
E)  7 meters. 
A)  2 times the wavelength. 
B)  0.5 times the wavelength. 
C)  At distance equivalent of the wavelength. 
D)  1 meter. 
E)  7 meters.

Question 20

If you were examining a shoreline erosion map and saw a line labeled "E-30," what does that mean?

Accepted Answer

The E-30 line is the expected

Sea level has been rising globally over the past century due to expansion of upper ocean waters.

When do waves begin to "feel the bottom"?

Tidal bores have very steep fronts,up to several metres high.

How can sea ice limit beach erosion?

How would you spot a rip-current from the shore?

Wave erosion is limited in much of the Arctic because

Under which of the following conditions will longshore drift occur?

Which of the following hard stabilizations is built parallel to shore and is intended to protect homes,cliffs,or bluffs?

Plunging breakers are produced

What is the difference between a plunging breaker and a spilling breaker?

What is the difference between eustatic and relative sea level?

Coasts with long sandy beaches are more abundant in tectonically active areas.

Which of the following is a "soft" engineering solution to coastal erosion?

What could cause a large change in eustatic sea level?

Which of the following is NOT a coastal hazard?

Rising sea level will increase coastal erosion hazards.

Which type of wave would you expect to see on a barrier island on the West Coast of Canada?

Why does the direction of littoral transport differ markedly along different coastlines?

Wave orbits tend to decrease in size as the depth of the water decreases.Orbital motion essentially stops at a depth of

If you were examining a shoreline erosion map and saw a line labeled "E-30," what does that mean?

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Wildfires

Climate Change

Meteorite Impacts and Extinctions

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Exam 12: Waves, Currents, and Coastlines

Sea level has been rising globally over the past century due to expansion of upper ocean waters.

When do waves begin to "feel the bottom"?

Tidal bores have very steep fronts,up to several metres high.

How can sea ice limit beach erosion?

How would you spot a rip-current from the shore?

Wave erosion is limited in much of the Arctic because

Under which of the following conditions will longshore drift occur?

Which of the following hard stabilizations is built parallel to shore and is intended to protect homes,cliffs,or bluffs?

Plunging breakers are produced

What is the difference between a plunging breaker and a spilling breaker?

What is the difference between eustatic and relative sea level?

Coasts with long sandy beaches are more abundant in tectonically active areas.

Which of the following is a "soft" engineering solution to coastal erosion?

What could cause a large change in eustatic sea level?

Which of the following is NOT a coastal hazard?

Rising sea level will increase coastal erosion hazards.

Which type of wave would you expect to see on a barrier island on the West Coast of Canada?

Why does the direction of littoral transport differ markedly along different coastlines?

Wave orbits tend to decrease in size as the depth of the water decreases.Orbital motion essentially stops at a depth of

If you were examining a shoreline erosion map and saw a line labeled "E-30," what does that mean?

Introduction to Natural Hazards

Internal Structure of Earth and Plate Tectonics

Earthquakes

Tsunamis

Volcanoes and Volcanic Eruptions

Landslides

Snow Avalanches

Subsidence and Soil Expansion and Contraction

River Flooding

Atmosphere and Severe Weather

Hurricanes and Extratropical Cyclones

Wildfires

Climate Change

Meteorite Impacts and Extinctions

Filters