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!!!*****
• 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