Geog. 1710 Chapter 16

Seawater freezes at

-2 celcius

Which of the following is true of the ocean deep zone

-The water in this zone does not freeze because of the intense pressure exerted by the weight of overlying water -The water in this zone does not freeze because of its salinity (doesnt freeze by the pressure of the water and its salinity)

Three zones of the ocean

1. Mixing (2%) 2. Thermocline (18%) 3. Deep cold zone (80%)

Near the shore, waves of transition begin to "feel bottom" and, as a result, the orbits of the water molecules in the wave become more _____. The process eventually causes ____ to form.

Elliptical; breakers

Although many elements are dissolved in seawater, no gases are dissolved in it. T/F?

False

As the evaporation rate increases, salinity decreases. T/F?

False

Seawater is not a solution. T/F

False

Brine water tends to occur near coastal deltas. T/F?

False (enclosed basins)

Erosional coastal processes and landforms

In rigged, high relief, tectonically active ex] Pacific ocean

Neap

Lesser tidal range and occurs during quarter Moons

The largest ocean in the world in terms of area is the _____ and the smallest ocean in terms of area is ______.

Pacific Ocean, Arctic Ocean

The concentration of dissolved solids in the seawater is called _____

Salinity

Swell waves

Smooth, symmetrical waves that travel outside the area of their orgin

Waves in shallow water that "feel bottom: are ___ and more ____ spaced than the swell they are related to.

Taller, closely

Tide range

The difference between consecutive high and low tides

From inland to the ocean, which sequence of zones is correct?

coast, backshore, foreshore, nearshore

Brine water results from

high evaporation rates

Brackish water would be most likely to occur

in the deltaic swamp

The height of a tsunami grows as it approaches a coastline primarily because

its wavelength shortens

A general term for the coastal environment is

littoral zone

Which of the following occurs when the Sun, Moon, and the Earth are in alignment (ie, in opposition or conjunction)?

maximum tidal ranges occur

About 2% of the oceanic mass comprise the

mixing zone of blended solutes and temperatures

Brine

salinity is greater than 3.5%

Brackish

salinity is lesser than 3.5%

Which of the following is incorrectly matched

spring tides-high tides only

Wave generating region

stormy area at sea containing large wave trains

Which of the following is not true of tides?

they are produced solely by the gravitational pull of the Sun

Which of the following is not an example of an erosional coastal landform?

tombolo

The Moon's gravitational pull on the Earth is greater than that of the Sun's. T/F

true

An earthquake, submarine landslide, or eruption of undersea volcano is capable of producing a

tsunami

Which of the following is not an example of depositional coastal landform?

wave-cut platform

Constructive interference

2 waves in a phase, where height of wave is increased

Destructive interference

2 waves out of a phase where height of a wave is decreased

How long does it take to produce 2 high tides and 2 low tides?

24 hrs 50 min

Worldwide average salinity is

3.5%

Current ocean mean pH?

8.2

Depositional coastal processes and landforms

Along land of gentle relief, passive, tectonically inactive ex] Atlantic Gulf coastal plains

A terrace is

An uplift wave-cut platform

Tide

Complex, twice daily oscillations in sea level,rising and falling several meters

Wave trains

Waves traveling in groups