the answer to this question is a density current forms when more dense seawater sinks beneath less dense seawater
Differences in temperature and in density of seawater drive deep ocean currents.
because of differences in pressure and density in a fluid
Deep currents form where the density of ocean water increase so, water density depends on temperature and salinity. I hope I helped you =)
The Antarctic Bottom Water, North Atlantic Deep Water, and Antarctic Intermediate Water are three density currents that form in polar regions.
Solar energy
The three factors that form deep ocean currents are temperature, salinity, and density. These factors influence the movement of water masses in the ocean, creating currents that can circulate for thousands of kilometers.
It just happens because of the differenciation in the air density which allows the so called convection currents to occur/form. Complex I know but is the closest conclusion.
deep currents form when dense water neat the poles sinks and flows slowly along the ocea floor
The heating of the ocean surface by the sun is the PRIMARY source of energy that drives the ocean currents. How and where they move is dependent on the spinning of the earth, wind patterns and the positions of the continents and oceans and the cool polar areas. In effect the ocean current transfer (solar) heat form the tropics to the poles and even out the temperature variations across the planet. winds, gravity, and water density are factors that move ocean currents.
Convection currents are the ones that can form in the geosphere and carry heat from the Earth's mantle towards the surface. These currents move molten rock in the mantle due to differences in temperature and density, driving the movement of tectonic plates and influencing volcanic activity.
Weight causes density, density causes pressure, pressure causes heat. Heat and pressure change rocks into other rocks, which are metamophic.
Density currents move from areas of higher density to areas of lower density. This typically means that they move downward in water or air when the dense fluid sinks beneath the less dense fluid, creating a current.