1. THE ULTIMATE TOWN DRAW THE MOUNTAINS Small Stream Large River
You own this land
Unlimited supplies and resources to create
the ultimate town
-Must provide way of providing food, shelter and energy for the people.

2. Think of all the things you like to
have in your life and make sure
it will be provided for them within
Your town.
Name your town
30+ minutes to create it
Present to class.

3. GREENHOUSE EFFECT Growing since the industrial revolution.
As the world’s use of energy grows, CO2 emissions grow even higher. Compounding the effect, 50 percent of today’s CO2 emissions stay in the atmosphere for 30 years, and the remainder for hundreds to thousands of years. As a result, the amount of CO2 in the atmosphere has increased from pre-industrial levels to a level that far exceeds the natural range of the previous 650,000 years. The last time this much CO2 was released into the atmosphere was 55 million years ago, which resulted in the world’s oceans warming by 5 to 8 degrees Celsius

4. Following the Industrial Revolution, temperatures started to rise, as did the
level of CO2 concentrations in the atmosphere.

5. Greenhouse gases in the atmosphere
reflect and trap heat radiation that would
otherwise pass out of Earth’s atmosphere.
The Intergovernmental Panel on Climate
Change linked the increase in atmospheric
greenhouse gases to three specific
climate effects:
-----increasing temperatures,
-----rising sea levels and
------reductions in land ice and snow cover.

6. Without greenhouse gases the earth would not be habitable because it would be too cold; however, too much of a concentration of greenhouse gases would cause the planet to overheat.

7. ANTHROPOGENIC ACTIONS
GHC’s – absorb some of the energy and
radiate it back to the earth
Carbon dioxide
Methane
Nitrous oxide
Chlorafluorocarbons(CFC)
Water vapor
CREATES GLOBAL WARMING

8. The IPCC predicts an increase in sea levels of 3 feet
by 2100 due to thermal expansion of the ocean.
The areas shaded in red would be underwater.