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Earth s Atmosphere

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Earth s Atmosphere

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    1. Earth’s Atmosphere Why is it so important to life on earth?

    2. Earth’s atmosphere is made up of 4 different layers…

    3. Did you know that The Science Monkey’s Took Steven? The Science Monkey’s Took Steven

    4. I know you are thinking…what is he talking about??? The Science Monkey’s Took Steven MEANS…. Troposphere Stratosphere Mesosphere Thermosphere Space THE 4 LAYERS OF THE EARTH’S ATMOSPHERE FROM THE EARTH OUT!

    5. Why is the atmosphere divided into 4 different layers? Any guesses?

    6. The first layer of the atmosphere is the… The troposphere is the layer of the atmosphere nearest to earth. The troposphere goes from 0km to 10km. About 75% of the air in the total atmosphere is in this layer…very dense. Main gases are nitrogen and oxygen

    7. Troposphere continued… Only layer that can support life The temperature drops as the altitude increases Bottom of Troposphere is about 120şF Top of troposphere is about -94şF All weather happens in the troposphere, clouds develop, birds fly, pollution collects. Harmful ozone is found here…IT CREATES SMOG! Pressure: Bottom: 1000mb Top: 200mb

    8. What is OZONE? A gaseous layer in the upper atmosphere that protects the earth from harmful ultraviolet radiation. At lower levels, ozone becomes a major pollutant.

    9. The second layer of the atmosphere is the… The stratosphere goes from 10km to 30 km. The temperature goes up with altitude. Bottom : -94şF Top: 64şF Temperature increase is due to ozone layer that absorbs energy from the sun’s UV rays and converts it to heat The protective ozone is at the top of the stratosphere ozone layer only 3 millimeters (3 mm) thick all together

    10. STRATOSDPHERE CONT… Most jets fly in this layer. Rivers of air, called Jet Streams, can be found at the base of this layer. Contains 24% of the atmosphere’s total air, mass, and molecules- air is less dense than the troposphere Pressure: Bottom: 200mb Top: 1mb

    11. The third layer of the atmosphere is the… The Mesosphere goes from 30km to 50km. In the mesosphere, the temperature drops with altitude. Bottom:64şF Top: -143şF The mesosphere is the coldest layer of the atmosphere.

    12. MESOSPHERE CONT… Radio waves are reflected back to earth in the mesosphere. Meteors burn up in this layer Less than 1% of the atmosphere’s total air, mass, and molecules are here, so the molecules are very far apart Pressure: Bottom: 1mb Top: .005mb

    13. The fourth layer of the atmosphere is the… The thermosphere goes from 50km to 1000km. In the thermosphere the temperature goes up with altitude. Bottom: -143F Top : 3600F The thermosphere is the hottest layer of the atmosphere.

    14. Thermosphere cont… Made of 2 sub layers Ionosphere (50km to 600km) Exosphere (600km to 1000km) Satellites orbit in the exosphere Curtains of light called auroras occur in the ionosphere layer. The Ionosphere is the component of the thermosphere that makes the auroras Pressure: Bottom: .005mb Top: 0mb The air molecules for so thin in this layer they are negligible. We can say the density is 0% of the atmospheres mass

    15. GOOD LUCK! It is important to understand the different characteristics of the earth’s atmosphere. As you go through the following slides, challenge yourself to see who can name the correct layer in which each characteristic can be found.

    16. THERMOSPHERE/ EXOSPHERE

    17. MESOSPHERE

    18. THERMOSPHERE

    19. TROPOSPHERE

    20. STRATOSPHERE

    21. THERMOSPHERE

    22. MESOSPHERE

    23. Pressure and Temp. Graph

    24. Links for more info

    25. Now that you are all experts on the atmosphere…continue with your study of meteorology!

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