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unit 4
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- 1waht is atmosphere??is a group of gases that we call air
- 2compositionit is made of
nitrogen
caron dioxide
water vapour
inert gases
oxygen - 3nitrogenis the most abundant gas
it does not react to other gases(inert gas) - 4carbon dioxideproduced during respiration,combustion reactions and in volcanic eruptions
0,038% - 5water vapour ozone inert gases(water vapour) comes from evaporation
(ozone) when oxygen s sumbjeted to ultraviolet rays is formed
(inert gases) such as argon,helium and neon - 6exospherevery low concentratin of gases
is were artificial satrllites are - 7thermosphereabsorbs x-rays
it can reach 1000 derees - 8mesosphereis were shooting stars are formed
- 9stratospheregases move horizntaly
protects us from ultraiolet rays - 10troposphereis 12 km avobe us
is were meterologycal phenomena is formed
it can reach-60 degrees - 11air pollutionis the alteration of the normal composition of the air due to the presnce of forms of energy and particles of matter,wich can be harmfull for living things and the eniroment
- 12types of pollutansthere are 2 types
natural (dust in deserts,ashes and gases
artificial (generated by human activity)
1. electromagnetic radiation
2. noise
3. radioactivity
4. chemical - 13acid raingases relesed by industry combined with rain pollute water and soil desroying vegetation
- 14greenhouse efectis the phenomena by wich the atmosphere retains some of the heat from the sun
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- Fichas sobre unit 4, creado por Andrés Morá el 21/01/2019.
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- Andrés Morá
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