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30 Cards in this Set

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wave height
The vertical distance from the crest of a wave to the trough.
Wave
The movement of energy through a body of water.
wavelength
The horizontal distance between 2 wave crests.
frequency
The number of waves that pass a specific point in a given amount of time
trough
The lowest point of a wave.
how do waves form
Most waves form when winds blowing across the waters surface transmits thier energy to the water.
Crest
The highest point of a wave.
What causes tides
By the interaction of the sun, earth and the moon.
Tides
the daily rise and fall of earths waters on the shore
spring tide
a tide with the greatest difference between low tides that occur when the sun and moon are aligned with the earth
neap tide
a tide with the least difference between low tides that occur when the sun and moon pull each other at right angles
energy from the tides
the movment of huge amounts of water between high and low tides are a sourse of potencial energy, so engineers desinged tidal power plants that caputre energy as the tides move.
ocean water
96.5 water; 3.5 salt; of that salt sodium 30.6, Chlorine 55, sulfate 7.7; magnesium, 3.7 calcium 1.2, potassium 1.1 ; 0.76 other
None
salinity
the amount of salt in water
Gases in water
oxygen and carbon dioxide;
temperature
The water gets colder the deeper you go.
None
desity
more salinity the the more density
pressure
Increases 10 times in 100 meters of depth
surface zone
extends from surface to about 200m and the temp. is 17.5
None
Transition zone
extends from the bottom of the surface zone about 1 km temp about 4
None
deep zone
extends about 1km to the ocean floor, tmp about 3.5 C
submersible
a underwater vehicle built of strong matereals to resist pressure
None
current
it is a large stream of moving water that flows through oceans
None
what are surface currents driven by
by wind (100m down)
coriosis effect
the way the earth's rotation makes winds in the Northern hemisphere curve to the right and the winds in the Southern hemsiphere curve to the left
None
climate
is the pattern of temperature and precipitation typical of an area over a long period of time
None
how do currents affect the climate
if the water is cool it cools the air above it
how are deep currents formed
They are caused by the differences in density,
None
upwelling
upward movement of cold water
El nino
an abnormal climate event that occurs every 2-7 years in the Pacific Ocean, causing changes in winds currents and weather changes that can lead to dramatic climate changes.
None