Because warm air is less dense then cool air.
yes the cool denser air sink while the warm less dense rises
The cold air will sink.
The higher the pressure the denser the air.
The tendency for warm air to rise and cool air to sink results in convection currents. As warm air rises, it cools and then sinks back down in a continuous loop, creating circulation patterns in the atmosphere. This process helps distribute heat and moisture around the Earth.
When warm air rises, it expands and cools as it does so. This cooling causes the moisture in the air to condense, forming clouds and potentially leading to precipitation. This process can contribute to the formation of weather systems such as thunderstorms or frontal boundaries.
Convection
True. Cool air sinks and warm air rises.
The cold air pushes under the warm air.
Warm air is less dense than cool air, so it rises upward. As it does so, the fast moving, compressed particles in the air begin to slow down and expand, causing them to cool (since fast-moving particles create heat, and slower-moving particles are colder).
When warm air rises and cool air sinks, a convection current is created. This is due to the difference in air density caused by temperature variations. Warm air is less dense and rises, while cool air is denser and sinks, creating a circular flow of air.
cold air sinks as denser - warm air rises
Cool air is denser than warm air, causing it to sink and create an area of higher pressure. As is moves downward, it displaces the warmer air at the surface, which then rises to form a low-pressure area. Warm air, being less dense, rises and creates a region of lower pressure.