https://padlet.com/jaehoon_lim/85bww4yx9oj4 By : Jaehoon Lim en-us 2017-11-09 03:54:55 UTC 2017-11-23 13:55:29 UTC hello@padlet.com jaehoon_lim https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205128761 Trophosphere
-The lowest layer of the atmosphere
- sea level to 11km
- Blankets earth's surface and contains the oxygen we need to live
Our weather occurs in the trophosphere
Stratosphere
- Above the trophosphere
- 11km to 50km
- Contains ozone layer
- Upper stratosphere is warmer because ozone gas absorbs and scatters suns ultraviolet rays
- Ozone protective layers are vital for life on earth
Mesosphere
- 50 = 80km above sea level
- Air pressure is extremely low
Thermosphere
- above 80km and extends upward to space
- Air is very thin
- Temperature is high]]> 2017-11-09 04:08:00 UTC https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205128761 jaehoon_lim https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205130189 Both human activities and natural processes cause outdoor air pollution, which is the release of damaging materials into the atmosphere. The substances released are called emissions. Some emissions, such as smoke and soot, consist of tiny particles, or particulate matter. Other are gases such as sulfur dioxide and carbon monoxide.
Natural Processes
Natural processes produce a great deal of the world's air pollution
Ex : Winds sweeping over dry land can create huge dust storms which can spread the dusts across one continent to another
Ex : Fires in forests and grasslands also produce smoke, soot, and gases.
Human Sources
Most air pollution comes, directly or indirectly, from the combustion of fossil fuels. Fossil fuels are are carbon-containing fuels that formed millions of years ago from the remains of living things.
Ex : Motor vehicles, such as cars and trucks, run by burning fossil fuels. Motor vehicles release an enormous amount of pollutants into the air.

]]> 2017-11-09 04:19:47 UTC https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205130189 jaehoon_lim https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205131509 Primary pollutants, such as soot and carbon monoxide, are pollutants released directly into the troposphere. Primary air pollutants may cause damage themselves, or they may react with other products to cause damage. ]]> 2017-11-09 04:33:08 UTC https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205131509 jaehoon_lim https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205131735 Harmful products produced when primary air pollutants react chemically with other substances are called Secondary air pollutants. Secondary air pollutants include tropospheric ozone and sulfuric acid]]> 2017-11-09 04:35:54 UTC https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205131735 jaehoon_lim https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205132336 2017-11-09 04:42:39 UTC https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205132336 jaehoon_lim https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205133569 2017-11-09 04:55:26 UTC https://padlet.com/jaehoon_lim/85bww4yx9oj4/wish/205133569