coolness
It is bumping into the lihosphere
coolness
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ice cream
The convection cell turns upward at point A due to the rising of warm air near the Earth's equator. As the warm air rises, it creates a low-pressure system, which causes the air to flow towards the poles at high altitudes. This flow of air completes the convection cell cycle.
The convection cell turns down at point c due to cooling of the air parcel at that elevation. As the air cools, it becomes denser and starts to sink. This sinking motion creates a downward convection flow in the cell.
In a convection cell, warm air rises due to being less dense than cooler air. As the warm air rises, it creates a low-pressure area at the surface, causing cooler air to be drawn in. This cycle of warm air rising and cool air sinking creates the convection cell's overturning motion.
heat from the outer core and the mantle when it drifts up to the asthenosphere it causes convection.
ice cream
A temperature difference within the fluid and a gravitational force are necessary for a convection cell to be set up. The warmer fluid rises due to lower density, while the cooler fluid sinks due to higher density, creating a circular motion known as a convection cell.
Uneven heating of different air masses causes the bottom ones to heat up, rise, cool off, and fall in another location in a cyclic motion.