1 / 28

The atmosphere and climate change

The atmosphere and climate change. carbon dioxide emissions; - concept of ‘carbon footprint’ and the need to reduce the carbon footprint; - deforestation; - greenhouse effect and global warming: desertification, drought and floods; - methane emissions; - ozone depletion.

woods
Télécharger la présentation

The atmosphere and climate change

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. The atmosphere and climate change • carbon dioxide emissions; • - concept of ‘carbon footprint’ and the need to reduce the carbon footprint; • - deforestation; • - greenhouse effect and global warming: • desertification, drought and floods; • - methane emissions; • - ozone depletion. Black writing on a white slide- content from curriculum NB learn for end Gr11 and Gr12

  2. From Gr 12 Examination Guidelines The atmosphere and climate change State what is meant by the greenhouse effect and why it is important for life on Earth. *Describe the sources of carbon dioxide emissions and methane emissions (greenhouse gases) which lead to the greenhouse effect. * Describe how deforestation leads to an increase in the CO2concentration. *State when the 'greenhouse effect' becomes known as the 'enhanced greenhouse effect'. *Describe how an increase in greenhouse gases (enhanced greenhouse effect) leads to global warming. *Describe how global warming may lead to desertification, drought and floods. *State what is meant by carbon footprint. *Describe ways in which we can reduce our 'carbon footprint' in order to de-crease global warming. * Describe the causes and consequences of ozone depletion. *List ways in which we can decrease ozone depletion.

  3. http://www.epa.gov/climatechange/kids/basics/index.html

  4. http://www.nec.com/en/global/eco/featured/space/05_esim_top.htmlhttp://www.nec.com/en/global/eco/featured/space/05_esim_top.html

  5. The higher the levels of carbon dioxide in the atmosphere the higher the temperature of the earth becomes. http://upload.wikimedia.org/wikipedia/commons/thumb/8/88/Mauna_Loa_Carbon_Dioxide.png/350px-Mauna_Loa_Carbon_Dioxide.png

  6. http://www.esrl.noaa.gov/gmd/ccgg/trends/

  7. Sources of Methane

  8. http://www.pbs.org/wgbh/pages/frontline/heat/art/graph3.jpg

  9. Carbon footprint: the amount of carbon dioxide or other carbon compounds emitted into the atmosphere by the activities of an individual, company, country. Learn all definitions VERY well

  10. Global Carbon Footprint http://s3files.core77.com/blog/images/2011/04/Stanford_Kay-Carbon_Footprint_Infographic-full.jpg

  11. Brainstorm what you can do to reduce your carbon footprint

  12. Deforestation is the removing or clearing of a forest to include the cutting of all trees, mostly for agricultural or urban use. Cutting and burning trees adds more global warming pollution to the atmosphere than all the cars and trucks in the world, about 15% of global carbon dioxide emissions. Consequences of deforestation: *Wipes out biodiversity *Destroys the livelihoods of forest peoples *Worsens global warming *Loss of topsoil Extinction of species http://www.edf.org/climate/redd Image: http://www.corbisimages.com/images/Corbis-FL006469.jpg?size=67&uid=1ff6a83c-2699-4e17-9d3d-357e655e8965

  13. Effects of Climate Change

  14. Effects of Climate Change http://www.epa.gov/climatechange/kids/

  15. Effects of Climate Change Research what individuals, schools, communities and businesses can do to reduce climate change

  16. Desertification is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture. • Desertification results mainly from a combination of natural climate changes causing prolonged drought and unsustainable human activities, including overgrazing and deforestation. Overgrazing on marginal lands (top) can extend desert zones (lower)

  17. Ozone depletion solutions • Montreal Protocol: international treaty • 1987: reduce CFC use by half by 2000 • 1990: goal to cut in half by 1995 • 1992: US law eliminated by end of 1995 World Ozone Day 2014 Tuesday, September 16, 2014 On this day primary and secondary school educators throughout the world organize classroom activities that focus on topics related to the ozone layer, climate change and ozone depletion. Some teachers use educational packages from the UN Environment Programme (UNEP) that have been specifically tailored to address topics about the earth's ozone layer.

  18. Hole in Ozone layer decreasing The Montreal Protocol on Substances that Deplete the Ozone Layer http://ozone.unep.org/new_site/en/montreal_protocol.php https://www.sciencenews.org/sites/default/files/16674

  19. Most household cleaning can be done with a half-and-half mixture of vinegar and water, or liquid soap and baking soda.

  20. If it has a thermostat it uses a large amount of electricity. How can your family/school reduce its electricity consumption?

More Related