It circulates Earth's surface by heat from the sun.(also you can look it up in the encyclopedia)
sinks towards the surface, creating dense air masses. These high-pressure areas are also influenced by the rotation of the Earth, known as the Coriolis effect, which causes air to circulate in a clockwise direction around the poles.
The layer of air above the Earth's surface is called the atmosphere. It is composed of various gases and extends several kilometers into space.
The type of heat transfer that causes air to circulate and form clouds is called convection. As air near the surface heats up, it becomes less dense and rises, carrying moisture with it. As the rising air cools, the moisture condenses to form clouds.
Radiation from the sun heats up the Earth's surface, causing the ground to warm up. This warmth is then transferred to the surrounding air through conduction, which is the direct contact of heat between the ground and the air molecules. Convection then takes over as the warmed air rises and cooler air moves in to take its place, creating wind and circulating the heat around the Earth's surface.
As the distance from Earth's surface increases, the air pressure decreases. This is because there is less air above pushing down on the air below. The decrease in air pressure is why it becomes harder to breathe at higher altitudes.
Heat from the sun
convection
air pressure is the highest near the earths surface
updraught
Mars has a thin atmosphere, mainly of Carbon Dioxide. Its surface pressure is around 0.7 kPa, around 0.7% of Earths surface pressure.
An air vent is an opening, sometimes covered by a grate, which allows air to circulate around a room.
air mass
air mass
air mass
Because there is more air (which has weight) above you if you are around sea level. If you fly up, or climb a mountain, there is less air above you, therefore less air pressure.
The air is thinner the higher you go.
air mass