schoolmode software is not optimised for sophia hardware...
This lazy parasic neet needs to get an education!
DEADLINE FOR STUDYING (at least all of unit bellow): BEFORE DEATH!!!!
What is air?
There is s a thin layer of gas surrounding the earth, it is comprised of nitrogen (78%) and oxygen (21%). the other 1% is a mixture of argon (0.9%), carbon dioxide (0.03%), and trace amounts of neon, helium, methane, water vapor, kypton, hysrogen, and xenon.
There is less air as you traval away from earth's surface, becasue gravity pulls the air molecules twards the earth. Air pressure, or barometric pressure, starts reletive to sea level.
The exosphere is the earths surface
The troposphere starts at ground level(varied, whereas sea level is constant) and extends to about 6 miles, or 33,000 feet. The temperature decreases as you travel up. This layer contains almost all of the water vapor in the atmosphere. Clouds and weather only exist in the troposphere for this reason. At the top of the troposphere is the tropopause section, the bountry bettween this layer and the next. The temperture stops decreating at -60F and remains steady before increasing the stratosphere.
The stratosphere begins where the troposphere ends and extends to 31 miles above earth. As you go up, the temperature increases instead of decreasing. It stops increasing right before you get above the freezing point (32F). This realm is too harsh for most commercial airplanes, but large jets may fly here to avoid weather systems found in the troposphere. The stratosphere is reletivly calm becasue is it cool on the bottom and warm on the top so there isnt a lot of air movement. This is why pollutants released in the atmosphere stagnate in the stratosphere for long periods. The ozone layer is located within the stratosphere. At the top of the layer, the air is roughly 1,000 times thinner than on the earth's surface.
The mesosphere exists from 31 to 53 miles above the earth. the temperature decreases as you move up. Not much is known about the mesosphere becasue it is too high for aircraft or weather balloons to reach. Even satellites cant retrive much because they orbit above it. Most meteors that would otherwise hit the earth are vaporised in the mesosphere, some bits of them remain in the leyer, which causes it to have a slightly higher consentration of metals. At the top of the mesoaphere is the mesopause before you enter the forth layer; the thermosphere.
The thermosphere extends from 56 miles to bettween 311 to 621 miles above the earth. Outer space officially begins in this layer at an altitude of 62 miles.
The termosphere is very hot during the day but cold at night. The air density is so low up here that most of the thermosphere is technically considered part of space. When the sun is particuarly active, the thermosphere puffs up to absorb more x-ray and uv radiation.
Due to the extreme tempertures, it would be difficult to allow humans to spend time in the thermosphere, however, this is where most satalites orbit earth. This is where is aurora lives. Dont you want to live with the aurora? But humans cant go up there, stupid.
The exosphere is is the final atmosphereic layer. Here, the air is so thin that it is nearly identical to conditions in outer space. The place where the exosphere and the thermosphere meet is called the thermopause or exobase and is found roughly 620 miles above the earth. I still have to look at the keys as i type, am i stupid?
Nothing happens in this layer. Even the space station orbits bellow the exosphere. Gas particles are spread so far appart that they rarely even collide, instead spending their time floating aimlessly and undisturbed (I wasted my time typing this part becasue it was cathartic.) It is so close to space that most people dont think it should be a layer of earth.
the ocean holds 97% of the water on earth. 78% of global precipertation occours over the ocean, and it is the source of 86% of global evaporation. Besides affecting the amount of atmospheric water vapor and hinc rainfall, exaporation from the sea surface is important int he movement of heat in the climate system. Water evaporates from the surphace of the ocean, mostly in warm, cloud-free subtropical seas. This cools the surface of the ocean, and the amount of heat absorbed by the ocean partially buffers the greenhouse effect from increasing carbon dioxide and other gasses. Water vapor carried by the atmosphere condenses as clouds and falls as rain, mostly in the ITCZ, far from where it evaporated (who cares what this means), condensing water vapor releases latent heat and this drived much of the atmospheric circulation in the tropics. This latent heat release is an important part of the earths heat balance, and it couples the planet's energy and water cycles.
The major physical components of the global water cycle include the evaporation from the ocean and land surfaces, the transport of water vapor by the atmosphere, preceipitation onto the ocean and land surfaces, the net atmospheric transport of water from land areas to ocean, and the return flow of fresh water from the land back into the ocean. The additional components of oceanic water transport are few, including the mixing of fresh water through the oceanic boundary layer, transport by ocean currents, and sea ice processes. On land the situation is considerably more complex, and includes the depositation of rain and snow on land, water flow in runoff; infiltration of water into the soil and groundwater; storage of water in soil, lakes and stream, and groundwater; polar and glacial ice; and use of water in vegetation and human activities.