In the atmosphere, as air warms it rises, allowing cooler air to flow in underneath.


The sun heats the air near the earth’s equator, which becomes less dense and rises upward. ! The exception is that combustion in a zero-gravity environment lacks buoyancy, so hot gases don't naturally rise, allowing fresh oxygen to feed the flame. What does a convection current do?

As it rises, it cools and becomes less dense than the air around it, spreading out and descending toward the equator again.

Combustion generates convection currents. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks.

The sun heats the air near the earth’s equator, which becomes less dense and rises upward. Convection drives the circulation of air in the earth’s atmosphere. Hope this helps! Convection currents are part of what drives global circulation of the Earth's atmosphere. The minimal convection in zero-g causes many flames to smother themselves in their own combustion … Convection drives the circulation of air in the earth’s atmosphere. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth. As it rises, it cools and becomes less dense than the air around it, spreading out and descending toward the equator again.