Exam 18: Restless Realm: Oceans and Coasts

Waves ________.

Notice the newly constructed seawall in the illustration below.The most likely outcome of its construction is that the seawall will __________.

Which of the following is true of beach nourishment as a solution to coastal erosion?

The shallowest portions of an ocean found along the margins of continents are the ________.

If the Earth's solid surface was smooth and completely submerged beneath the ocean,each location would experience two tides a day and the tidal reach would depend on the position of the location relative to the highest part of the bulge.This is not the case.Describe three factors,aside from the tide-generating force,that affect the timing and magnitude of tides.

Using the figure below,which of the following lists correctly identifies the seafloor landforms G,C,and F?

The castle on the island of Mont Saint-Michel,France,can be accessed ________ a day during ________ tide,but ________ during neap tide.

A(n)__________ is a vegetated,flat-lying stretch of coast that floods at high tide,becomes particularly exposed at low tide,and does not feel the impact of strong waves.

When the sea level rises,an ocean may invade a river valley,producing a nearshore body of water of mixed and variable salinity termed a(n)________.

Why is a spring tide so much higher than a normal high tide?

Swamps and marshes are examples of __________.

What will eventually happen to the headlands in the figure below?

Define the flow of the Ekman transport and explain its process.

Surface currents flow __________ in the Northern Hemisphere and __________ in the Southern Hemisphere.

Compared with the continental crust,the oceanic crust is ________.

Along beaches,groins have ________.

Approximately what percentage of the Earth's surface is covered with ocean water?

Sea level is currently rising at 3.3 mm/year,and scientists predict that global warming could cause a rise in sea level of 7 m if left unabated.How long will it take the sea to rise 7 m at the current rate?

Which type of coastline would most likely contain estuaries or fjords?

What is the average salinity of the oceans? How does ocean salinity vary? What factors are responsible for higher and lower salinity?