| Project 7 Earth's Atmosphere |
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| www-sage3.larc.nasa.gov/solar/ learn-welcome.html |
| The earth's atmosphere starts from Tropophere, Troposhere, Ozona Layer, Stratosphere, Stratopause, Mesosphere, Mesospause, and Thermosphere. These layers of the atmosphere held by gravity. Troposhere is about 90% of the mass of the atmosphere. The earth's atmosphere mostly made up of nitrogen (78%) and oxygen (21%). The atmosphere also contains water in all three states of forms gas, liquid, and solid. |