ENVIRONMENTAL SCIENCE II FINAL EXAM REVIEW

UNIT 3: AIR POLLUTION

• Final Exam will be on Wednesday June 10, 2015• The final exam is worth 20% of your final grade for the course• Please bring a pen or pencil to the exam with you. Absences: Excused absence- you will take it on the day you return Unexcused absence- you will receive a 0

*****During the exam, if your cell phone or any electronic device is on your person, you will receive a 0!!!*****

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://www.nature.nps.gov/air/AQBasics/sources.cfm&ei=kIZxVdquKJX_yQTg4oLgCg&bvm=bv.95039771,d.aWw&psig=AFQjCNGItcx7MCtl3CIwW3254cCFCJ0EtA&ust=1433589764994261

• Natural Air Pollutants: sand, dust, forest fires• Particulates- tiny solids suspended in the

atmosphere• Ash, dust, pesticides, fertilizers

Pollutants are worse in the winter- poor circulation

Carbon Monoxide• Deadly- Odorless and

colorless gas• From generators, faulty

heating systems, fireplaces, cars• Prevents oxygen from

binding to the hemoglobin in your Red Blood Cells- deprives your body of oxygen

Acid Rain• Gas: sulfur dioxide• The gases react with water in the atmosphere forming

carbonic acid or sulfuric acid• Source of Gas: burning fossil fuels• Effect on the environment: • Decreases the pH of lakes- aquatic organism may not be

able to adapt to the change• Damages buildings

Ozone Depletion• Gas: chlorofluorocarbons

(CFC’s)• Source of Gas: aerosol cans,

refrigerator and AC coolants• Effect on the environment:

breaks down the ozone layer• Why is the ozone layer

important? It protects us from UV rays- can cause skin cancer

Global Warming• The Greenhouse Effect: greenhouse gases trap heat

in the atmosphere leading to an increase in the temperature of the earth

• How can we slow down global warming?• Use renewable energy sources• Decrease our use of fossil fuels• Put an end to deforestation• Decrease our use of energy

• Gas: carbon dioxide, methane, water vapor • Greenhouse gases

• Source of Gas: • carbon dioxide- burning fossil

fuels• Methane- landfills, biomass,

cows

Effects of Global Warming on the Environment:

• Coastal flooding and damage: melting polar ice caps will increase the level of the sea which will cause coastal cities to flood• Energy Use: due to the warmer temperature, more energy will be

used for air conditioners to keep cool• Extreme Weather: warmer water temperatures will lead to an

increase in the number of hurricanes• Sea Level Rise: warmer temperatures will cause the ice caps to melt,

which will cause in an increase in sea level• Increased Diseases: warmer temperatures are ideal conditions for

many disease causing insects to survive.• Insect Infestation: Warmer temperatures will allow many insects to

survive year round• Thinning Polar Ice: due to the warmer temperature, the polar ice

caps will melt• Decrease biodiversity- increased extinction due heat- animals may

not be able to adapt