In fluids and in electrical circuits.
unequal heating
They occur when the convection currents are less dense and rise.
The rotating loops of currents that occur in the ocean are referred to as gyres. The Pacific Ocean is the largest ocean in the world.
Convection currents occur in the mantle, which is the middle layer of the Earth. The heat generated from the core causes the molten rock in the mantle to move in a circular pattern, creating convection currents.
valence band
uh me
The mantle.
It is from differing temperatures of air above it that causes currents to flow in the water.
My best guess is that they occur because of warming and cooling of the surface temperature. I am sure there is a pattern of these deep ocean currents to and from the equator and the poles.
ocean currents truly are everywhere, but the do not occur directly on the coast.
Convection currents occur in the Earth's mantle, which is the layer beneath the Earth's crust. These currents are responsible for driving the movement of tectonic plates on the Earth's surface, leading to phenomena like earthquakes and volcanic activity.
Convection currents are circular movements of fluid driven by temperature differences. In Earth's mantle, convection currents occur in the asthenosphere, which is the semi-solid layer beneath the lithosphere. These currents play a significant role in plate tectonics and the movement of Earth's crustal plates.