Earth Science BJU Chapter 14

Question 1

Which of these combines the effects of the current speed, and water depth to produce the direction of a current?

Accepted Answer

Ekman Spiral

Question 2

How many tides does the average coast experience in a typical 24-hour period?

Accepted Answer

4 (2 lows and 2 highs)

Question 3

A strong, narrow surface current that carries water from the shore to the sea.

Accepted Answer

Rip Current

Question 4

The alternating rise and fall of local sea level.

Accepted Answer

Tides

Question 5

What are thermohaline currents?

Accepted Answer

Deep-density currents that flow far beneath most major surface currents.

Question 6

The moon&#x27;s gravity causes the oceans to rise both on the near side and the far side of the earth.

Accepted Answer

False

Question 7

A _____ current is a type of density current that carries a great amount of sediment like an underwater mudslide.

Accepted Answer

Turbidity

Question 8

Why is it inaccurate to call a tsunami wave a tidal wave?

Accepted Answer

Tsunami waves are caused by earthquakes

Question 9

Upwelling has been observed only near the Equator due to its lower-than-average sea level.

Accepted Answer

False

Question 10

Generally speaking, the longest waves have the greatest speeds.

Accepted Answer

True

Question 11

A higher-than-usual tide occurring twice a month.

Accepted Answer

Spring Tide

Question 12

A spit with a sharp bend.

Accepted Answer

Hook

Question 13

Waves generally move water greater distances.

Accepted Answer

False

Question 14

Which of these is most directly related to wave speed?

Accepted Answer

Wave Period

Question 15

An unstable wave whose crest is falling forward.

Accepted Answer

Breaker

Question 16

What is defined as the deepest depth below the ocean&#x27;s surface that is affected by the waves passage?

Accepted Answer

Wave Base

Question 17

Cold water rising to the surface.

Accepted Answer

Upwelling

Question 18

A wave deposit that connects an island or a stack with the mainland.

Accepted Answer

Tombolo

Question 19

The lowest part of a wave.

Accepted Answer

Trough

Question 20

A circular flow of currents within an ocean basin.

Accepted Answer

Gyre

Question 21

Rip currents are responsible for ____________.

Accepted Answer

The Greatest Number of Drownings

Question 22

Most power plants designed to harness the power of title changes are fairly small.

Accepted Answer

False

Question 23

A(n) _____ is a mass of rock that has been cut off from the mainland by erosion.

Accepted Answer

Stack

Question 24

What forms of sea life are taught to take advantage of ocean currents in their efforts to move about?

Accepted Answer

Jellyfish, European Eels, Humpback Whales, and Plankton

Question 25

The major warm current located in the West Atlantic Ocean is the _______________

Accepted Answer

Gulf Stream or Brazil Current

Question 26

If you wanted to sail around the globe to remain south of Africa and South America, what single current could you use?

Accepted Answer

Antarctic Circumpolar Current

Question 27

Cold ocean currents are responsible for many deserts around the world.

Accepted Answer

True

Question 28

Due to the Kuroshio (Japan) Current, western Canada is colder than eastern Siberia.

Accepted Answer

False

Question 29

Currents are affected by the rotation of the earth.

Accepted Answer

True

Question 30

Why is upwelling often associated with very productive fisheries?

Accepted Answer

Upwelling pulls up nutrients that support phytoplankton

Question 31

Water that is forced down by downwelling typically has more ________ but less _________than surrounding waters.

Accepted Answer

Oxygen; Nutrients

Question 32

Why are groins sometimes constructed along coastlines?

Accepted Answer

Groins disrupt longshore currents, thus reducing beach erosion.

Question 33

A current resulting from waves breaking at an angle to the shore.

Accepted Answer

Longshore Current

Question 34

(Prevailing winds) would have the least effect on __________ currents.

Accepted Answer

Subsurface

Question 35

In the center of an ocean gyre, the sea level is usually _________

Accepted Answer

Higher than the outside gyre

Question 36

Twice each month, lower-than-usual tides called ___________tides, occur .

Accepted Answer

Neap

Question 37

The prevailing westerlies are winds that blow an angle toward the poles, pushing surface water in a westerly direction.

Accepted Answer

False

Question 38

The distance that wind blows over the water&#x27;s surface in one direction is the _____ of the wave caused by the wind

Accepted Answer

Fetch

Question 39

The very high tides that occur twice a month are caused by _______

Accepted Answer

The Sun, Moon, and Earth being arranged in a straight line.

Question 40

The Great Pacific Garbage Patch is the result of man&#x27;s carelessness and a strong oceanic _____.

Accepted Answer

Gyre

Question 41

The _____ of a series of waves is the horizontal distance from the crest of one wave to the crest of the next wave.

Accepted Answer

Wavelength

Earth Science BJU Chapter 14

Questions 41

Earth Science BJU Chapter 14

Questions 41