Air Pollution

Air pollution

• Air Pollution- change in the atmosphere that has a negative impact

• Emission- solid particles and gases that are released into the air

• Things that cause pollution are

– Carbon monoxide

– soot

– Ash

– Sulfur

– Nitrogen oxide

Smog, what causes it?

• Photochemical smog [smog]- thick brownish haze formed when certain gases in the air react with sunlight

• Causes are

– Automobiles and trucks

– Hydrocarbons

– Nitrogen oxides

• Ozone- gases react with sunlight and produce a form of oxygen

• Temperature Inversion-layer of warm air prevents the rising air from escaping then the smog becomes more dangerous and concentrated

Health effects of Smog

• Health effects are– Itchy water eyes– Scratchy throat– Lung problems– Harm defenses against infections

Acid rain and the causes

• Acid rain –precipitation that is more acidic than normal

• Causes are when nitrogen oxide and sulfur oxide react with water vapor

• Can be found in snow, sleet or fog

Effects of acidic rain

• Has some negative effects they are– Can change in conditions in pond or lakes– Destroys plants and forests – Can rust objects [not reversible]

• To neutralize acidic rain add lime

Indoor pollution

• Indoor pollution-pollution inside

• Examples are

– Dust

– Pet hair

– Air freshener

– Paints oils and glue

– Smoking

• These things can cause lung disease and damage the heart

Global warming

• Global warming- increase in carbon dio-oxide will rise temperature

• This could cause more storms and affect crop growth and Antarctica ice cap would melt

Calculating climate change

• Calculating is complex

• Takes less than century

• Use computer models to calculate changes in atmosphere

The

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