Currents Basics
__________ will heat slowly, but will also give off heat slowly.
Oceans (water)
Surface Currents are mixed by what two things?
Winds and waves
True or False:
The water in the ocean is cold all year long, and stays at about 32 degrees F.
True
Define upwelling:
When minerals/nutrients are being brought up from the bottom of the ocean.
Oil does not mix with water because they have different ________________.
Densities
The ocean's surface temperature vary with the amount of ______________ received.
Sunlight
Surface currents are controlled by what three factors?
Global Winds
Coriolis Effect
Continental Deflections
What two factors cause a change in density
Temperature
Salinity
What percentage of the water in the world is salt water? `
97%
Why do scientists prefer to compare other solids/liquids to water?
Water's density is 1.0g/cm3. This makes it easy to compare.
What are the two types of currents?
Deep Ocean Currents
Surface currents are made of warm water, which is _________ dense than cold water.
Less
When water is cooled down at the poles, it will begin to move where?
Back to the equator.
Define downwelling:
When minerals/nutrients are being brought from the surface of the ocean to the bottom.
An object's density is 1.75g/cm3. Will this object float or sink in plain water.
The object will sink.
The areas that receive more direct sunlight have a (LOW/HIGH) latitude degree.
Low latitude degree
Toward the poles
If you increase the temperature of water but the amount of salt stays the same, have you changed the density? Yes or no?
Yes
What direction does the northern hemisphere currents turn due to the Coriolis Effect?
Clockwise
True or False:
Dense water is warmer and less salty.
FALSE