The earth's atmoshpere and global warming
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The document discusses the different layers of the atmosphere: 1) The troposphere is the lowest layer and extends from the Earth's surface to around 12km high. It contains around 75% of the atmosphere's mass. 2) Above the troposphere lies the stratosphere, which extends from 12km to 50km high. It contains the ozone layer which absorbs UV radiation. 3) The mesosphere extends from 50km to 80km high. It is the coldest part of the atmosphere. 4) Above this is the thermosphere, where the temperature increases with height. This layer extends from 80km to the base of the exosphere.
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The document discusses the layers of the Earth's atmosphere. It is divided into 4 layers - the troposphere closest to the surface ranging from 0-10km, the stratosphere above that from 10-25km containing the ozone layer, the mesosphere from 25-100km, and the thermosphere the highest layer from 100-400km where meteorites burn up. The atmosphere contains nitrogen, oxygen, argon, carbon dioxide and other gases with nitrogen being the most abundant.
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Chapter 2
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- 1. AND
- 2. WHY SHOULD I STUDY THIS LESSON?
- 3. AND
- 4. AND
- 7. AND
- 9. โข What are the conditions for riding a two wheeler? โข What are the conditions for driving a 4 wheeler? โข What are the conditions for building a house? โข What are the conditions for healthy life?
- 10. AND ?
- 11. AND
- 12. AND ATMOSHPERE: Meaning and Overview
- 14. Oh My God!!!
- 15. AND
- 16. AND
- 17. AND
- 18. AND Mixture of gases Water vapour Pollen grains Impurities like smoke, salts and chemicalsDust particles
- 19. AND
- 20. AND
- 22. Temperature of Air โข The degree of hotness or coldness of the air is called the temperature of air. โข The temperature or air increases because of the heat absorbed by the gases, dust particles and water vapour present in the air. โข As we go upwards from the surface of the earth, air becomes thinner and the amount of dust particles and water vapour becomes less. โข Hence heat absorbed by air is less. โข Thus air temperature decreases with altitude
- 25. Nitrogen is required to maintain the fertility of soil
- 26. Oxygen helps all forms of life to breathe
- 28. AND
- 34. TROPOSPHERE โข Lowest layer of the Atmosphere โข Goes up to a height f 12km โข At Polar region it extends upto 9 km โข At equator it extends upto 17 km โข Height varies due to change in the weather. โข Tropopause lies above troposphere
- 36. TROPOSPHERE
- 42. Different Layers of Atmosphere Separates Stratosphere from Troposphere
- 51. Different Layers of Atmosphere Coldest place in atmosphere with an average temp of -85 C
- 52. Different Layers of Atmosphere THERMOSPHERE This is where Space begins
- 53. THERMOSPHERE This is where Space begins The ISS- International Space Station orbits here
- 54. Different Layers of Atmosphere THERMOSPHERE This is where Space begins
- 60. Different Layers of Atmosphere This layer is composed of Hydrogen, Helium, Nitrogen, Co2 and Oxygen
- 61. In this layer the atoms and molecules are located far from each other, which is why they occupy hundreds of kms and do not collide into each other This layer is composed of Hydrogen, Helium, Nitrogen, Co2 and Oxygen
- 62. The exosphere do not behave like a gaseous layer and the particles are always escaping into space. This layer is composed of Hydrogen, Helium, Nitrogen, Co2 and Oxygen
- 63. This layer is composed of Hydrogen, Helium, Nitrogen, Co2 and Oxygen
- 65. IONOSPHERE
- 70. โข The Homosphere is a surfaced based layer and covers layers from Troposphere to Thermosphere . โข This layer ends at Turbopause. โข Gases at this level get mixed because or turbulence.
- 74. Different Layers of Atmosphere . Gases are mixed . Gases are not evenly mixed