The Earths Atmosphere

by: Sierra Richardson

Hello my name is Sierra Richardson we will be talking about the earth atmosphere

First we will learn about the Thermosphere.                                                                The thermosphere is the biggest of all the layers of the earth's atmosphere directly above the mesosphere and directly below the exosphere . Within this layer, ultraviolet radiation causes ionization. The International Space Station has a stable orbit within the middle of the thermosphere, between 320 and 380 Kilometres (200 and 240 mi).Auroras also occur in the thermosphere. the thermosphere Tempeture  is 2,500 c ( 4,530 F) during the day

the facts about the thermosphere

The Mesosphere is the third layer of the atmosphere. It is 85 miles close to Earth. It is also the coldest layer at -148º F. As you get higher up in the Mesosphere the temperature gets colder. The boundaries between the layers of the atmosphere have names, and the Mesosphere’s is the Mesopause. Weather balloons and jet planes can’t fly high enough to reach the Mesosphere and the obits of satellites are above the Mesosphere so scientists do not know much about this layer. Millions of meteors burn up daily in the Mesosphere as a result of collisions with some of the billions of gas particles contained in this layer. The Mesosphere also contains strange kinds of lighting. They are called red sprites, blue jets, and elves and they appear dozens of miles above thunderclouds in the Troposphere. Space shuttle orbits Earth in this layer. Noctilucent clouds in Mesosphere’s North and South poles are formed by water vapor from space shuttle exhaust. They are strange because they form up way higher then any other cloud. phere diagram to tell u the facts about it

The stratosphere is a layer of Earth's atmosphere. The stratosphere is the second layer, as one moves upward from Earth's surface, of the atmosphere. The stratosphere is above the troposphere and below the mesosphere.

The top of the stratosphere occurs at 50 km (31 miles) altitude. The boundary between the stratosphere and the mesosphere above is called the stratopause. The altitude of the bottom of the stratosphere varies withlatitude and with the seasons, occurring between about 8 and 16 km (5 and 10 miles, or 26,000 to 53,000 feet). The bottom of the stratosphere is around 16 km (10 miles or 53,000 feet) above Earth's surface near the equator, around 10 km (6 miles) at mid-latitudes, and around 8 km (5 miles) near the poles. It is slightly lower in winter at mid- and high-latitudes, and slightly higher in the summer. The boundary between the stratosphere and the troposphere below is called the tropopause. ( the link i got it from is http://www.windows2universe.org/earth/Atmosphere/stratosphere.html )

this pic is what GOSE  on  in the 5 stages of the atmosphere last but not lees THE TROPOSPHERE

The troposphere is the lowest layer of Earth's atmosphere and site of all weather on Earth. The troposphere is bonded on the top by a layer of air called the tropopause, which separates the troposphere from the stratosphere, and on bottom by the surface of the Earth. The troposphere is wider at the equator (10mi) than at the poles (5mi).

The troposphere contains 75 percent of atmosphere's mass- on an average day the weight of the molecules in the air is14.7 lb..(sq. in.)- and most of the atmosphere's water vapor. Water vapor concentration varies from trace amounts in Polar Regions to nearly 4 percent in the tropics. Most prevalent gases are nitrogen (78 percent) and oxygen (21 percent), with the remaining 1- percent consisting of argon, (.9 percent) and traces of hydrogen ozone ( a form of oxygen), and other constituents. Temperature and water vapor content in the troposphere decrease rapidly with altitude. Water vapor plays a major role in regulating air temperature because it absorbs solar energy and thermal radiation from the planet's surface.

The troposphere contains 99% of the water vapor in the atmosphere. Water vapor concentrations vary with latitudinal position(north to south). They are greatest above the tropics, where they might be as high as 3% and decrease toward the polar regions.

THE WEB SIGHT I GOT IT FROM IS http://web.physics.ucsb.edu/~lgrace/chem123/troposphere.htm

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