Ocean currents
What is a large, circular system of surface currents called?
A gyre
Why does warm air rise?
It is less dense than the cooler air around it.
What is Convection?
The transfer of heat through the movement of liquids or gases.
Why does cool air sink?
It is denser and heavier than warm air.
What is Wind?
The movement of air, generally flowing horizontally across the Earth's surface from areas of high pressures to areas with low pressures.
What happens when warm air and cold air mix?
Warm air rises and cold air sinks
Density-driven current of ocean water, powered by difference in temperatures and salinity that affect water density.