Ocean surface currents (1 & 2)
Streamlike movements of water that occur at or near the surface of the ocean are called what?
Surface currents
Speeds in the core of the EAC are among the strongest in the South Pacific, up to _._ mph.
4.5 mph
When currents meet landforms, they change _________.
Direction. (This is known as continental deflection).
Deep currents are ______-____ movements of ocean water far below the ocean surface.
Stream-like
A wave is defined as a...?
Transfer of energy
The Gulf Stream, transports ____ times more water than all of the rivers in the world.
25
The East Australian Current flows along the ____ _____ of _________. And flows southward from the _____ _______ ____.
East coast of Australia - Great barrier reef.
Warm water currents begin near the _______ and carry warm water to other parts of the ocean.
Equator.
Does the temperature and salinity affect the density of ocean water?
Yes, ocean water gets denser when it becomes saltier or gets colder.
Waves are made of, what two main components?
Crests and Troughs
Surface currents can reach depths of several hundred ______ and lengths of several thousand __________.
Meters - Kilometers
Some people would compare the current to a, what? (Apposed to a tube).
A ribbon
Cold water currents begin closer to the _____ and carry cool water to other parts of the ocean.
Poles.
What happens to the denser water and less-dense water? Do different things happen?
The denser water moves along the ocean floor and eventually travels toward the equator in the form of a deep current. Less-dense water always flows on top of denser water. (Yes).
A crest is the _______ point and the trough is the ______ point.
Highest - Lowest
Global winds blowing across the Earth’s surface create, what?
Surface currents
How many cubic meters of water does the East Australian Current transport each second?
A staggering 40 million cubic metres of water are transported southward each second.
Can surface currents affect the climate in many parts of the world?
Yes, surface currents greatly affect the climate in many parts of the world.
Cold air chills the water molecules at the surface, causing them to move closer together. What is the result of this?
As a result, the volume of the water decreases, and the water becomes denser.
Ocean aves form because of ________ between the wind and the surface of the water. (Waves move in a circular pattern).
Friction
Currents in the ________ Hemisphere turn clockwise while currents in the _______ Hemisphere turn counterclockwise.
Northern - Southern
(Coriolis Effect)
The current is almost, how many km wide? And more than 1.5 km deep.
100 km wide.
Warm-water currents create warmer climates in coastal areas that would otherwise be much cooler. Cold-water currents create cooler climates in coastal areas that would be much warmer.
(Iceland) - (San Francisco)
Deep currents are not controlled by wind or the Coriolis effect. Deep currents are mainly controlled by, what?
Increases in water density.
A wavelength is the ________ between two adjust crests or troughs. Wave height is the ________ ________ between a waves crest and its trough.
Distance - Vertical Distance