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