AIM: What are the effects of air pollution on the environment

Do Now: What is air pollution? Explain why it is harmful.

What is Air Pollution?Harmful substances

released into the atmosphere.

There are three types of pollutants:1. Natural Air pollutants2. Pollutants from human activity3. Indoor air pollutants

Global Effects of Air Pollution

1. Acid Precipitaiton

2. Ozone Depletion

3. Global Warming

Acid Precipitation

Acid Precipitation

• Rain or snow becomes acidic

• Normal rain/snow has a pH of 5.6

What causes Acid Rain?

• burning of fossil fuels• Rain mixes with gases in the air

• CO2 (carbonic acid) SO2 (sulfuric Acid), NO2 (Nitric Acid)

What happens when acid starts to accumulate in lakes?

• Fish die- water is too acidic for them

• Disrupts the food chain

• Affects the entire ecosystem

Other problems associated with acid rain

• Damages trees

• Damages crops

• Damages buildings

Ozone Depletion:

Protects us from UV radiation

What is the job of the ozone layer?

What causes ozone delpetion?

• Aerosol cans

•Refrigerator Emissions

• Air Conditioner Emissions

CFC’s

(Chlorofluorocarbons)

What is the problem with using CFC’s?

They create holes in the ozone layer allowing more UV radiation to reach us

How can UV radiation affect living things?

•Sunburn, blindness, skin cancer

•mutations

•Severe crop damage

•Kills aquatic organisms (disrupts food chains)