What sets convection currents into motion?

Answer 1

If you are heating water in a pan on the stove, the water at the bottom of the pan will warm first. Since warm water is lighter, it will rise, and cool water from the top will flow down to replace it. This is called convection, and will continue until all the water is hot.

Convection currents can occur in large bodies of water, in the atmosphere, or beneath the earth's crust. All that is needed is a warmer, lighter fluid below a cooler, heavier one.

Answer 2

Convection currents which make the Earth's crust float on the mantle are caused by the hot magma below. Convection currents can occur in all kind of hot mixes, even when you are making soup or pudding.

The hot material at the deep will rise (because it is hotter, like hot air goes up) by that rising it will start to cool and then sink again to the deep where it will heat up and start rising and so on in an everlasting cycle.

Answer 3

Convection currents are set into motion by temperature differences in a fluid or gas. When one part of the fluid is heated, it becomes less dense and rises, while the cooler, denser fluid sinks, creating a circular motion. This process is responsible for phenomena like ocean currents and atmospheric circulation.

Answer 4

Convection currents are sent into motion by warm or hot air. This is because the hot air is able to quickly replace the cold air until it turns cold itself.

Answer 5

Heat transfer caused by fluids...