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D - Science - Unit 6

The Air Around You - Part 2

What is the importance of earth's atmosphere? it makes conditions on earth suitable for living things
What sources of pollution release a great deal of smoke and dust into the air? forest fires, soil erosion, and dust storms
How do erupting volcanoes cause pollution? they spew out clouds of dust and ash, along with poisonous gases
What is most air pollution the result of? burning fossil fuels, such as coal, oil, gasoline, and diesel fuel
Almost half of fossil fuel air pollution comes from what sources? cars & other motor vehicles
What type of pollutants do fossil fuels produce? carbon monoxide, nitrogen oxides, and sulfur oxides
What 2 things are caused by burning fossil fuels? smog & acid rain
How is photochemical smog formed? formed by the action of sunlight on pollutants, such as hydrocarbons and nitrogen oxides
How does acid rain form? forms when nitrogen oxides and sulfur oxides combine with water in the air to form nitric acid and sulfuric acid
Who monitors air pollutants in the US? Environmental Protection Agency
What is something that people can do to help reduce pollution? use more public transportation instead of driving a car
Why are the small percentage of the remaining gases in dry air called trace gases? because only small amounts of them are present
Besides oxygen, what 2 things do all living things need to survive? warmth & liquid water
What does the atmosphere protect living things from? the sun's ultraviolet radiation
What does the atmosphere prevent from hitting the earth? meteroids
What is water vapors important role in earth's weather? to make clouds
Created by: lprinke