In the earths mantle the convection currents pass through the mantle which then causes friction in the tectonic plates causing earthquakes,volcanoes or tsunamis
<span>Ocean currents aid in
the transportation of cold water towards the tropics and warm water towards the
poles. By so doing, they help in the regulation of climate by ensuring that the
uneven distribution of solar energy is counteracted. This in turn impacts on
climate.</span>
The mid-latitude
coastal city at the western boundary is likely to experience cool summers than
they should and cool winters. On the contrary, a mid-latitude city on the
eastern boundary is likely to experience a warmer weather. This mainly occurs
because the two areas have different water temperatures. On the west, the gulf
stream that feeds up the hurricane is usually warm as opposed to the east where
ocean surface temperatures tend to be low.
I think it is the Prime Meridian, though I may be wrong.
The distances are so great and vast that they need a large measurement to easier express the distances. They use Astronomical Units (AUs) for distances within our solar system.
