Mostly the sun.
The sun's heat warms the earth. This heat, in the form of infra-red energy rises into the atmosphere where it is trapped by greenhouse gases. This greenhouse effect warms the atmosphere.
To the extent that the sun warms the atmosphere, and varying temperatures within the atmosphere are the basis of winds, yes.
The atmosphere is actually heated by the earth, not by the sun directly. Visible light passes through the atmosphere and strikes the surface of the earth, and thus warms the surface layer of the earth. The atmosphere is mostly transparent to visible light, meaning the light does not absorb visible light, and is therefore not heated by visible light. As the surface of the earth warms up, it radiates low intensity infrared radiation, which is not transparent to the atmosphere, and so the atmosphere absorbs the infrared radiation, and warms up. The air closest to the surface of the earth absorbs most of the infrared radiation, and is therefore warmer than air at a higher altitude. In fact, above about 10 km, the temperature starts to increase again due to the presence of the ozone layer. This absorbs solar ultraviolet radiation which leads to heating.
The sun's heat is radiated to the earth which enters the atmosphere. This heat warms up the surface but is then reflected back into space. But, as the atmosphere's amount of greenhouse gases is increasing, less heat is escaping from the earth's surface and is getting trapped. This results in what we call 'global warming' as the earth's temperature heats up.
The sun warms many things when it is shining. It warms the air, water, and all other surfaces it touches.
As the sun warms the Earth's surface, the atmosphere warms too. Some parts of the Earth receive direct rays from the sun all year and are always warm. Other places receive indirect rays, so the climate is colder. Warm air, which weighs less than cold air, rises. Then cool air moves in and replaces the rising warm air. This movement of air is what makes the wind blow.
The greenhouse effect warms the gases in the atmosphere.
convection
it warms up the planet
it warms up the planet
it warms up the planet
The sun warms the earth. The heat (energy) from the earth then heats the air.
Warms
no, it warms by compression heating.
Sunlight comes in and warms the Earth's surface. It warms the gases in the air too, at least some of them with a How_is_earth's_atmosphere_similar_to_a_greenhousesize that gets excited by sunlight.
To the extent that the sun warms the atmosphere, and varying temperatures within the atmosphere are the basis of winds, yes.
I guess that the atmosphere would change in terms of depth if the planets temperature changed enough.
which of the following describes characteristics of the stratosphere