The Greenhouse Effect Presenters: Jaime Pinto & Nathalie Mokuba Instructor: Lyra Riabov ESL 5 Exit Test

Outline Introduction Definition Greenhouse means? Greenhouse Gases. The changes in the atmosphere’s concentration of greenhouse gases can affect the Earth's temperature How does Greenhouse Effect occur? Negative effects Hypotheses about the Greenhouse Effect Effects of Global Warning on Life Possible solutions: How to reduce The Green House Effect? Conclusion

The Green House Effect The greenhouse effect is a term that describes how natural gases in the earth's atmosphere reduce the amount of heat escaping from the earth into the atmosphere. The more of these gases there are, the more the Earth heats up.

Greenhouse means? Most greenhouses look like a small glass house. Greenhouses are used to grow plants, especially in the winter.

Greenhouse Gases Water vapor Carbon dioxide (CO2) Methane (CH4) Nitrous oxide (N2O) Carbon monoxide Ozone Halocarbons Smoke and Dust

Carbon Dioxide in the atmosphere Photosynthesis balance to keep the amount of atmospheric carbon relatively stable. Industrialization, has contributed additional carbon dioxide to the environment.

How does Greenhouse Effect occur? Solar energy is absorbed by the Earth and the oceans. Reradiates back on out into the atmosphere, into stratosphere. The burning of fossil fuel create a veil in the atmosphere

Negative Effects Droughts in most of the agricultural areas in the world.

Negative Effects The melting of the polar ice caps and subsequent flooding of coastal areas.

Hypotheses about the Greenhouse Effect. The Global Warming is taking place. The Global Cooling is going to occur. Neither Global Warming nor Cooling will occur or has been occurring.

Effects of Global Warning on Life Climate Change and global Warming Rise of sea Level Increase of disease Environmental Changing Increase of natural disasters

How to reduce the Greenhouse Effect BY THE GOVERNMENT: Stabilization of the population growth. Reduction of air pollution from industries (international agreements) Reduction of desertification and protection of the rainforest against the clearance (national programs) Finding alternative fuel

How to reduce the Greenhouse Effect BY PEOPLE: Reduce the use of fossil fuel Stop the clearance of the forest Follow the recommendations to reduce the emission of Greenhouse gases.

How to reduce the Greenhouse Effect BY US Be well inform about the consequences of Greenhouse Effect Change your lifestyle habits to help save the environment Plant trees. Eliminate the use of CFCs

Conclusion Cutting down forest and burning fossil fuels create more CO2 in the air. When there are more greenhouse gases, more heat is radiated towards Earth’s surface, this produce Global warming. Even global temperature changes of less than 1 degree can cause problems, like sea level rise and changes in rainfall. Find solutions such as: reduce population, reduce air pollution, stop desertification.

References http://encarta.msn.com/greenhouseeffect http://www.epa.gov/globalwarming http://www.greenhouse.gov.au/education EPA Article about Greenhouse Effect. http://www.ucar.edu