Kettles and saucepans heat water from the bottom so that convection currents are set up easily. Convection currents can be seen in lava lamps.The wax inside the lamp warms up, expands, becomes ...

The Antarctic Circumpolar Current (ACC), the strongest ... s ice sheet is disrupting the normal convection process, which moves cold water from the surface down into deeper layers of the ocean.

A new study finds no, but other experts aren't so sure. Fresh, cold meltwater likely weakens the current, the team found. The meltwater dilutes the surrounding seawater and slows convection between ...