Question 1

___________are rough rock or reinforced concrete structures built parallel to the coast to protect boats and harbours from the force of large breaking waves.

Accepted Answer

A)   Groins
B)   Seawalls
C)   Jetties
D)   Breakwaters

Question 2

Which one of the following statements concerning global sea level is correct?

Accepted Answer

A)   It dropped during the past few centuries and that trend will continue because of all the new deep ocean trenches at the subduction zones.
B)   It rose over past centuries but will probably drop in the next hundred years because things always average out in the long run.
C)   It fluctuates up or down by several centimetres a year but lacks any long term trend.
D)   It rose quickly at the end of the last Ice Age but continues to rise slowly due to global warming.

Question 3

Briefly give two reasons why, among all geologic environments, the coastal ones are the most fragile in relation to human activity and most prone to sudden change.

Accepted Answer

Coastal dynamics necessitate constant ch...

Question 4

High initial costs and eventually high maintenance costs, high potential for storm damage and negative environmental impact are consequences of policies to_______ .

Accepted Answer

A)   allow coastal development, make a long- term commitment to beach nourishment
B)   prohibit coastal development, build nothing but grass shacks, put a moratorium on insurance, declare victory over the sea, and retreat from the coastline
C)   promote coastal development, build massive, hardened structures to stop all but the most powerful storm waves
D)   get wasted in Margaritaville!

Question 5

Where is wave attack the strongest?

Accepted Answer

A)   on the crest of the beach berm
B)   in mid ocean before waves shoal and slow down
C)   in the unprotected middle of bays and estuaries
D)   against the sides and ends of headlands

Question 6

Name two manmade factors that contribute to changes of coastal shoreline environments.

Accepted Answer

foreshore engineering works, d...

Question 7

Which one of the following coastlines would typically have bedrock features such as wave- cut cliffs, sea stacks, sea arches, and wave- cut platforms?

Accepted Answer

A)   one where a bedrock wave- cut cliff is rapidly retreating inland as sea level falls
B)   one where unconsolidated sediments are being eroded as sea level falls
C)   one where unconsolidated sediments are being rapidly deposited as sea level rises
D)   one where bedrock is vigorously eroded in the surf zone as sea level rises

Question 8

Erosional retreat of a(n) __________ leads to enlargement and inland extension of a wave- cut platform.

Accepted Answer

A)   wave- cut tombolo
B)   offshore, wave- cut, breakwater bar
C)   wave- cut barrier beach
D)   wave- cut cliff

Question 9

How much do moonrise and the time of highest tide change each day?

Accepted Answer

A)   5 minutes later
B)   50 minutes later
C)   29 minutes earlier
D)   5 hours later

Question 10

Where does most active sediment transport occur?

Accepted Answer

A)   in the longshoreman's zone by stevedores
B)   on the beach face by winds
C)   in the shoreface zone by breaking waves and longshore currents
D)   the offshore zone by pelagic currents

Question 11

A(n)  _________current forms during an incoming or rising tide.

Accepted Answer

A)   ebb
B)   flood
C)   rip
D)   drift

Question 12

What is the seaward limit of the offshore zone?

Accepted Answer

A)   fair weather wave base
B)   the sea arch
C)   the barrier island
D)   the beach berm

Question 13

Which active landform is most common along the Texas- Gulf of Mexico coast?

Accepted Answer

A)   sombreros
B)   barrier islands
C)   sea stacks
D)   deltas

Exam 11: The Ocean Floor

Which active landform is most common along the Texas- Gulf of Mexico coast?

Correct Answer
verified

High initial costs and eventually high maintenance costs, high potential for storm damage and negative environmental impact are consequences of policies to_______ .

Correct Answer
verified

Name two manmade factors that contribute to changes of coastal shoreline environments.

Correct Answer
verified
foreshore engineering works, d...
View Answer

How much do moonrise and the time of highest tide change each day?

Correct Answer
verified

Erosional retreat of a(n) __________ leads to enlargement and inland extension of a wave- cut platform.

Correct Answer
verified

Which one of the following coastlines would typically have bedrock features such as wave- cut cliffs, sea stacks, sea arches, and wave- cut platforms?

Correct Answer
verified

Briefly give two reasons why, among all geologic environments, the coastal ones are the most fragile in relation to human activity and most prone to sudden change.

Correct Answer
verified
Coastal dynamics necessitate constant ch...
View Answer

What is the seaward limit of the offshore zone?

Correct Answer
verified

Where does most active sediment transport occur?

Correct Answer
verified

Which one of the following statements concerning global sea level is correct?

Correct Answer
verified

A(n) _________current forms during an incoming or rising tide.

Correct Answer
verified

___________are rough rock or reinforced concrete structures built parallel to the coast to protect boats and harbours from the force of large breaking waves.

Correct Answer
verified

Where is wave attack the strongest?

Correct Answer
verified

Exam 11: The Ocean Floor

Which active landform is most common along the Texas- Gulf of Mexico coast?

Correct AnswerverifiedShow Answer

High initial costs and eventually high maintenance costs, high potential for storm damage and negative environmental impact are consequences of policies to_______ .

Correct AnswerverifiedShow Answer

Name two manmade factors that contribute to changes of coastal shoreline environments.

Correct Answerverifiedforeshore engineering works, d...View AnswerShow Answer

How much do moonrise and the time of highest tide change each day?

Correct AnswerverifiedShow Answer

Erosional retreat of a(n) __________ leads to enlargement and inland extension of a wave- cut platform.

Correct AnswerverifiedShow Answer

Which one of the following coastlines would typically have bedrock features such as wave- cut cliffs, sea stacks, sea arches, and wave- cut platforms?

Correct AnswerverifiedShow Answer

Briefly give two reasons why, among all geologic environments, the coastal ones are the most fragile in relation to human activity and most prone to sudden change.

Correct AnswerverifiedCoastal dynamics necessitate constant ch...View AnswerShow Answer

What is the seaward limit of the offshore zone?

Correct AnswerverifiedShow Answer

Where does most active sediment transport occur?

Correct AnswerverifiedShow Answer

Which one of the following statements concerning global sea level is correct?

Correct AnswerverifiedShow Answer

A(n) _________current forms during an incoming or rising tide.

Correct AnswerverifiedShow Answer

___________are rough rock or reinforced concrete structures built parallel to the coast to protect boats and harbours from the force of large breaking waves.

Correct AnswerverifiedShow Answer

Where is wave attack the strongest?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
foreshore engineering works, d...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Coastal dynamics necessitate constant ch...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified