Exam 15: The Dynamic Ocean

Large estuaries are more common on a(n)________ coastline.

As a fluid (air or water)moves toward an area of lower pressure in the Northern Hemisphere,the Coriolis effect results in counterclockwise circulation.

A spring tide occurs ________.

What is the difference between the coastline and shoreline?

Longshore sand transport and longshore currents depend on waves impinging parallel to a shoreline.

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?

When a wave arrives at an irregular shoreline,the wave front remains straight as it impinges on the shore.

Spits,baymouth bars and sea stacks are all features produced by longshore transport of sediments.

The east and west coasts of the North America have very different temperatures at the same latitude primarily because of ocean currents.

Low and narrow offshore,emergent ridges of sand that parallel the coast are called ________.

A barrier built at a right angle to the beach for the purpose of trapping sand that is moving parallel to the shore is called a(n)________.

When waves reach shallow water,they are often bent and tend to become parallel to the shore.This process is termed ________.

Because deep ocean circulation is driven largely by variations in water temperature and salinity,it is also called ________ circulation.

The zigzag movement of sand grains along a beach is ________.

Tidal flats are submerged during ebb tide.

Which one of the following structures is built to protect boats from large breaking waves?

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

When the daily tidal range is LEAST,it is called a ________ tide.

The ________ effect causes ocean currents to be deflected to the right of their path of motion in the Northern Hemisphere.

Briefly discuss the movement of sand on a beach environment.Include those factors,both natural and human-induced,that affect sand movement.