1 / 12

Environment

Environment. The earth’s annual mean temperature increased approximately 1.4 degrees Celsius from 1866 to 1990. This has been named Global Warming caused by the Greenhouse Effect. Greenhouse Effect.

beau-cherry
Download Presentation

Environment

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Environment The earth’s annual mean temperature increased approximately 1.4 degrees Celsius from 1866 to 1990. This has been named Global Warming caused by the Greenhouse Effect.

  2. Greenhouse Effect Carbon Dioxide trapped within the atmosphere is causing the heat from the Sun to remain within the atmosphere, which slowly warms the earth causing what is known as the Greenhouse Effect.

  3. Carbon • The earth’s total amount of carbon is neither gained or lost, but merely moved around. • Plants use carbon in their everyday life. • Carbon is stored in growing and dead plant material.

  4. Carbon in Oil • Carbon is also stored in oil deep below the earth’s crust. When this oil is brought to the surface and burned, a large portion of carbon moves into the atmosphere. • Excess carbon in the atmosphere is believed to be a contributing factor in the “greenhouse effect” theory and the “global warming” theory.

  5. Carbon Cycle • The carbon cycle describes the general movement of carbon. • Carbon is moved from one area to another: • From underground to the atmosphere by use • Into plants by respiration • Back into the air by use or decay of the plant • Between atmosphere and water by osmosis • In and out of animals by consumption and digestion

  6. Carbon Cycle Carbon Cycle

  7. Carbon Dioxide (CO2) • Measuring CO2 in the atmosphere is one way to check carbon movement. • The amount of CO2 in the atmosphere is increasing. • The release of CO2 in the atmosphere has been associated with the depletion of the ozone layer.

  8. Ethanol Combustion • Ethanol combustion does not result in high levels of CO2 because the gas that is released is offset by the gas that is consumed by plants grown for ethanol production.

  9. Carbon Dioxide Levels CO2 levels in Hawaii and Northern Canada (Alert, NWT) are significantly higher than pre-industrial levels and are continuing to rise.

  10. Biomass Carbon Cycle Experts suggest that the greenhouse effect could be lessened by using biomass-based energy. While growing, plants consume carbon in the form of CO2. This carbon is then released in the form of CO2 when plant material is used as a source of energy.

  11. References • Global Warming Information Pagehttp://www.globalwarming.org • United National Environmental Programhttp://www.grida.no/climate/vital/03.htm • CRC Greenhouse Accountinghttp://www.greenhouse.crc.org.au • Total Ozone Mapping Spectometerhttp://jwocky.gsfc.nasa.gov/teacher/ozone_overhead.html • Environmental Candahttp://www.ec.gc.ca/envhome.html • Oak Ridge National Laboratoryhttp:// www.ornl.gov

  12. End of Section

More Related