Exam 15: The Dynamic Ocean

Rocks and sand particles on beaches become rounded rapidly because _______ .

Anyone who has ever gone swimming in heavy surf will tell you that if a wave is about to crash over you, the best thing to do is dive down, under the wave. Why does this keep you from being swept up in the wave, like being in a washing machine?

A variety of techniques and efforts are used to stabilize shorelines throughout the world. Are all of these efforts only temporary measures or are any of them permanent? Also, does urbanization and development of coastal areas always contribute to shoreline erosion? Explain.

A ridge of sand projecting into a bay and often having a hooked end is a_______ .

Which of the following is correct regarding a wave in the open ocean?

The town of Grand Isle, Louisiana is built on a barrier island that has been shrinking for decades. They have tried the following approaches to protect the island from coastal erosion. Which of these is not a feature intended to simulate natural barrier island beach processes?

The presence of which one of the following would indicate that the land had been uplifted or that sea level had fallen?

One result of wave refraction is that wave energy is concentrated_______ . Nature's forces are at play to try to even out the coastline.

Why would sand be deposited behind a small island to form a spit or tombolo?

What kind of man made feature would likely lead to sand loss on a beach regardless of active margin west coast North America. versus passive margin east and Gulf coast of North America. setting for the coastline?

What direction is the longshore current in the area pictured below?

The daily tidal range is greatest during what period of the lunar cycle?

Density- driven ocean circulation is also called _______ circulation.

The movement of water within the surf zone that parallels the shore is termed_______ .

Large circular- moving currents of water within an ocean basin are called_______ .

The east and west coasts of the North America are dominated by _______ and _______ currents, respectively.

A flat, bench- like surface cut in rock along a coast is a _______ .

Chesapeake Bay and Delaware Bay are_______ .

As the tide falls, water flows out to sea as the _______ tide.

The black sand beaches in Hawaii are comprised of_______ .