Resources and Conservation

Pollution and Air Pollution A pollutant is __________________________________ Types of air pollution include: _________________ A substance that contaminates the environment soot smoke ash Carbon dioxide Nitrogen oxides Sulfur oxides Carbon monoxide

MAN MADE VS. NATURAL POLLUTANTS Man-Made Pollutants - Volcanic eruptions Wind- blown dust and sand - forest fires cars Trucks Airplanes Factories -homes Power plants Evaporation of paints and other chemicals smog sunlight Another type of pollution is ______________. It is created when _____________ reacts with pollutants produced by ___________________. burning fuels

Acid Rain How does acid rain form? Effects of Acid Rain Preventing Acid Rain Air pollutants from the burning of fossil fuels reacts with water in the air to form strong acids that precipitate down from clouds. nutrients washed away tree or plant death Acid rain runoff flows into lakes/ponds which could harm or kill the fish or other organisms living there. use natural gas or low-sulfur coal Use smokestacks that remove sulfur dioxide before it enters the air Use the automobile less keep engines tuned Use electric cars or hybrid-fuel cars that run on electricity

Acid Rain Destruction

This statue has been slowly destroyed by acid rain so that now the faces are barely visible.

Greenhouse Effect

Why do we need the greenhouse effect? Because without this effect, temperatures on Earth would be too cold to support life. Critical Thinking…. These days, when people talk about the greenhouse effect, they talk About it like it’s a bad thing. Why is that?

Global Warming A rise is the Earth’s ________ __________ possibly cause by an _________ in greenhouse gasses is known as global warming. What kinds of changes could be caused by global warming? _______________________________________________ average temperature increase Changing rainfall patterns could alter ecosystems & affect kinds of crops Storms & hurricanes might increase Polar ice caps may melt rising sea levels & flooding areas Tropical disease could become more widespread

Ozone Depletion Ozone depletion is ______________________________ ________________(CFCs) are the main pollutant gasses that cause this. Where do CFCs come from? ___________ When CFCs ______ into the air, they travel until they reach the upper ozone and ______ _______ the ozone molecules. The thinning of the ozone layer Chlorofluorocarbons refrigerators freezers air conditioners leak break apart

This image, captured from the Ozone Monitoring Instrument (OMI) aboard NASA's Aura satellite, shows the area of the ozone hole over Antarctica. November 1979 November 2009

UV Radiation Because of ozone depletion, the amount of ___ ___________ that reaches the earth’s surface is increasing. Think about it…. What is the difference between the ozone in the upper atmosphere and the ozone in the lower atmosphere? UV radiation Ozone in the upper atmosphere protects life on Earth. Ozone in the lower atmosphere pollutes the air damaging the lungs and other sensitive tissues of animals and plants.

Water Pollution How can water get polluted? Air pollutants can get washed out by rain. Rain can wash land pollutants into water. Factories and sewage plants can release pollutants Fertilizers pesticides Critical Thinking… How can water pollution cause harm to humans even if they are never in the water? How can ground water get polluted? Ground water can get polluted by the pollution leaks into the ground and then enters into our ground water.

Soil Pollution How does this diagram show soil and water pollution? How can soil be polluted? Air pollution drifts to ground Water leaves pollutants behind Litter landfills Pesticides Radioactive wastes Petroleum based solvents Hospital wastes How does this diagram show soil and water pollution?