Composition of the atmosphere
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The atmosphere is composed primarily of nitrogen and oxygen gases. It also contains smaller amounts of other gases like carbon dioxide, argon, and ozone. The atmosphere protects the Earth by absorbing harmful ultraviolet radiation from the sun and maintaining a stable temperature. It is divided into four main layers - the troposphere, stratosphere, mesosphere, and thermosphere - which differ in temperature and chemical composition.
Composition of the atmosphere
- 1. Geography
- 2. Composition of the atmosphere • Air- is a mixture of several gases. • Air surrounding the earth is know as the atmosphere • The atmosphere help protect us from harmful gases and maintain the suitable temperature necessary for life.
- 4. COMPOSITION OF THE ATMOSPHERE • The atmosphere is made up of different types of gases, water vapour and dust • particles. The composition of the atmosphere is not static. It changes according to the time and place. • (A) Gases of the atmosphere: • The atmosphere is the mixture of different types of gases, including water vapour • and dust particles. Nitrogen and Oxygen are the two main gases of the atmosphere.
- 5. Ozone Gas • The amount of ozone gas in the atmosphere is very little. It is limited to the ozone • layer but it is very important. It protects the living beings by absorbing the • ultraviolet rays of the sun. If there was no ozone gas in the atmosphere, there would not have been existence of living beings and plants on the earth surface
- 7. Importance of the Atmosphere:
- 8. Atmosphere Theatmospherecanbedividedintofourdistinct zones: 1. Troposphere 2. Stratosphere 3. Mesosphere 4. Thermosphere
- 10. Atmospheric Criterion Thermosphere 80km out to 480 km Upper limit is the themopause (pause means to change)
- 11. Atmospheric Criterion Mesosphere 50km to 80km Mesopause is the coldest portion of atmosphere. There’s a low density of molecules
- 13. Atmospheric Criterion • Stratosphere •18km to 50 km •Temperature increase with through out the stratosphere. Stratosphere is the location of the ozone layer
- 14. Atmospheric Criterion Troposphere Final layer encountered by incoming solar radiation. It surges through the surface. It is the region of principal weather activities
- 16. References • Beaudry, R. (2011) introduction to the structure of Earth atmosphere. Available from slideshare at https://www.slideshare.net/beaudry2011/structure-and- composition-of-the-atmosphere?qid=0d3987c2-a92f-4668-a1f4- b1d361997a28&v=&b=&from_search=1 (accessed 29 August 2018) • GeoCoops (2015) structure of the atmosphere. Available from slideshare at https://www.slideshare.net/GeoCoops/structure-of-the-atmosphere-49476702 (Accessed 29 August 2018) • Guest6b681228. (2010) The atmosphere. Available from slideshare at https://www.slideshare.net/guest6b681228/the-atmosphere-3193194 (accessed at 29 August 2018)
- 17. • Karthikeyan, C. (2017) composition and structure. Available from slideshare at https://www.slideshare.net/KarthikeyanC2/atmosphere- 111790704?qid=1cb6ffad-366f-47f5-b284- 28a7562cccc9&v=&b=&from_search=3 (accessed 29 August 2018). • Mushtaq, B. (2016) Atmosphere-composition and structure. Available from slideshare at https://www.slideshare.net/Drbasharat/atmosphere-structure- and-composition?qid=bd75fe67-1401-46ef-a919- a53e12ab1f10&v=&b=&from_search=2 (Accessed 29 August 2018)