Ocean Currents

By: Logan Kegley

They are driven by the raise and fall of tides.

So currents are also affected by tides. So they are affected by the gravitational pull of the sun and the moon.

The lowest points are caused by gravity.

The gravity pulls the water down so the current track is being pulled down and then back up.

Deep currents are caused by density.

Density causes the deep ocean currents because the density of slat water is more than the density of pure water at the same temperature.
Bill Nye The Science Guy on Ocean Currents (oceanography (Full Clip)

Are they used like highways of the ocean?

Are ocean currents really used like underwater highways like to movies make them look?

(Finding Nemo)

What makes them stay in one place?

Alot of the currents stay in one place, so how would this work? How are they able to stay in one place?

Why do we need ocean currents?

We need ocean currents because they circulate the oceans. So if they were to be messed with it would make very big atmospherical changes. This would cause very big changes in the weather outside.