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Global Warming

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Global Warming A gradual increase in the temperature of the surface of the Earth The Greenhouse Effect The trapping of heat by gases ... What are some effects of UV ... – PowerPoint PPT presentation

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Title: Global Warming


1
  • AIM What is Global Warming?
  • DN For each of the following, state what it is,
    what causes it, and why it is bad for the
    environment
  • Acid Rain
  • Ozone Depletion
  • HW Air Pollution Exam Monday
  • HW Article and Questions 2
  • due Friday (BP Oil Spill)

2
Global Warming
  • A gradual increase in the temperature of the
    surface of the Earth

3
The Greenhouse Effect
  • The trapping of heat by gases in the atmosphere
  • Raises the average temperature of the Earth
  • Why is this needed?
  • This is needed for life to exist!!!

4
(No Transcript)
5
Greenhouse Gases
  • Trap heat
  • 1. Carbon Dioxide burning fossil fuels such as
    coal, oil and natural gas
  • 2. Methane- decomposing wastes in landfills
  • Nitrous Oxide- fertilizers
  • Water Vapor
  • An increase in greenhouse gases in the atmosphere
    is caused by burning of fossil fuels.

6
  • WHAT ARE THE EFFECTS OF GLOBAL WARMING?????

7
1. Rising Sea Levels
  • Caused by melting glaciers
  • Flooding of coastal cites

8
2. Extinction
  • Species may not be able to adapt to change in
    climate
  • Decrease in biodiversity

9
3. Effect on plants and animals
  • Possible migration to cooler areas
  • Change in life cycles
  • Extend time for warmer climate plants

10
4. Human Health
  • Increased geographical area for tropical
    diseases- ideal conditions for many insects such
    as mosquitoes
  • Malaria, West Nile Virus, Dengue Fever
  • cholera

11
5. Storms
  • Warmer ocean water more hurricanes
  • Floods, loss of lives, damage to property

12
6. Droughts
  • Crop failure
  • Decrease in global food production- starvation

13
7. Economy
  • Cost of natural disasters
  • Increase in food and energy costs

14
8. Ecosystems
  • Land, water, air
  • Change in ecosystems can decrease the
    biodiversity- plants and animals may not be able
    to adapt
  • Migration of animals- depletion of resources in
    certain ecosytems

15
  1. What are some natural sources of pollution?
  2. What are particulates?
  3. What causes normal precipitation to become
    acidic?
  4. Explain why Carbon Monoxide is a dangerous air
    pollutant.
  5. What is the function of the ozone layer?
  6. Why is there concern about CFCs in the
    stratosphere?
  7. What are some effects of UV radiation on living
    things?
  8. Define the term greenhouse effect.
  9. What are some greenhouse gases?
  10. What is global warming and what is believed to be
    its cause?
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