Ocean Surface Currents (Slides 1 & 2)
Streamlike movements of water that occur at or near the surface of the ocean are called
surface currents
4.5
When currents meet landforms, they ___.
change direction
___ are stream-like movements of ocean water far below the ocean surface.
Deep currents
Waves are made of two main components. They are
crests and troughs
The Gulf Stream transports __ times more water than all of the rivers in the world
25
The East Australian Current transports a staggering 40 ___ cubic metres of water southward each second.
40 million
Warm water currents begin near the ___ and carry warm water to other parts of the ocean.
equator
Starting at about _ meters, the water temperature becomes colder as the depth increases.
200
A ___ is the distance between two adjust crests or troughs.
wavelength
Surface currents
The current is almost __ km wide.
100
Cold-water currents create __ in coastal areas that would be much warmer .
cooler climates
Deep currents are mainly controlled by ___ in water desnity
increases
___ is the vertical distance between a waves crest and its trough.
Wave height
Currents in the Southern Hemisphere turn ___.
counterclockwise
The current is more than __ km deep.
1.5
Warm-water currents create ___ in coastal areas that would otherwise be much cooler.
warmer climates
Temperature and salinity affect the __ of ocean water.
density
A __ is the highest point of a wave.
crest
Currents in the Northern Hemisphere turn ___.
clockwise
the real East Australian Current is much ___ than in the movie.
bigger
Some surface currents ___ coastal areas year-round.
warm and some cool
Ocean water gets __ when it becomes saltier or gets colder.
denser
__ is a type of wave that moves through matter and then vibrates our eardrums so we can hear.
sound