Ocean Water
The oceans covers this much of the surface of planet earth
What is 70%
Area were the warm surface water meets the cold, deep water
What is the thermocline
Huge chunks of floating glacial ice
What is an iceberg
Three primary types of water movement in the oceans
What is currents, waves, and tides
a submerged area that rims land, beginning at the shoreline and gently sloping underwater to an average depth of 430 feet
What is the continental shelf
The amount (measure) of dissolved salt in seawater
What is salinity
Two main factors that affect the density of seawater
What are salinity and temperature
When glaciers extend into the ocean and do not break off they form this
What is an ice shelf
large streams of ocean water that flows at or below the surface is called
Currents (surface and subsurface)
Flat area of the ocean floor, covered with sand, mud and plant and animal remains (ooze)
What is the abyssal plain
About 78% of the salt in the oceans is this type of salt
What is sodium chloride
Does colder, denser water sink or float
What is sink
Why do icebergs float?
Because frozen water is less dense that liquid water
Rhythmic back and forth motions of water that transfer energy; has a crest and a trough
What is a wave
What are mid-ocean ridges
The color of the ocean water is due to blue light being ____________ and all other colored light being ____________
What is reflected and absorbed
The pressure from water is called
What is hydrostatic pressure
Area known for mountain life icebergs
What is the arctic
dangerous surface current that carry large volumes of water from the shore to the sea
What are rip currents
underwater mountains formed by erupting volcanoes
What are seamounts
They enter the seawater through the atmosphere; these are the 2 main gasses found in ocean water
What are oxygen ad carbon dioxide
Reason frozen ocean water is not salty
When seawater freezes, salt is left behind
The name of largest iceberg ever recorded
What is B15
What are spring tides
a steep sided valley at the center of a mid-ocean ridge
What is a rift