1 / 19

How human activities impact the Earth's ecosystems II

How human activities impact the Earth's ecosystems II. http://ian.umces.edu/blog/2013/02/12/managing-for-sustainable-ecosystems-our-human-role/. Bell ringer activity. Have you heard of the ozone layer? Write down what you think causes the ozone layer depletion.

teenie
Download Presentation

How human activities impact the Earth's ecosystems II

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. How human activities impact the Earth's ecosystems II http://ian.umces.edu/blog/2013/02/12/managing-for-sustainable-ecosystems-our-human-role/

  2. Bell ringer activity • Have you heard of the ozone layer? Write down what you think causes the ozone layer depletion. chemicals :chlorofluorocarbon (CFC)

  3. 4. Ozone layer depletion

  4. 4. Ozone layer depletion con’t • The ozone layer protects people from UV light. (Especially, UVB light) http://www.epa.gov/ozone/science/sc_fact.html http://www.epa.gov/ozone/science/q_a.html

  5. 4. Ozone layer depletion con’t • Ozone -Blue -Has a strong odor.

  6. 4. Ozone layer depletion con’t • Chlorofluorocarbons (CFCs) are chemicals that were used in aerosol cans, refrigerators, etc. • When CFCs and other pollutants are broken down by UV light, they damage the ozone layer.

  7. 4. Ozone layer depletion con’t • Ozone hole over Antarctica • More UVB light can cause skin cancer and other harmful effects on some organisms.

  8. 4. Ozone layer depletion con’t • Many countries banned or reduced the production of CFCs. • The ozone layer will be recovered in about 50 years. http://www.epa.gov/ozone/science/sc_fact.html

  9. Video: ozone layer depletion (Fill out the handout.) • http://www.youtube.com/watch?v=6QyI3Yo1sf4

  10. 5. Energy consumption http://www.eia.gov/forecasts/ieo/world.cfm 1 Btu = 1055 joules

  11. 5. Energy consumption con’t http://www.eia.gov/forecasts/ieo/world.cfm

  12. 5. Energy consumption: fossil fuels • (Thaddeus, 2010)

  13. Possible solutions to the problems with fossil fuels • Nuclear energy • Renewable energy -Solar energy -wind energy -Geothermal -Bioethanol • Reducing energy consumption, etc. • (Thaddeus, 2010)

  14. Possible solutions to the problems with fossil fuels • All the possible alternate energy sources have advantages and disadvantages. • More countries try to switch to alternative energy sources.

  15. Fuel Mix for U.S. Electricity Generation http://www.epa.gov/cleanenergy/energy-and-you/index.html

  16. Video: Japan’s wind power • http://www.cnn.com/video/?/video/world/2013/03/11/zolbert-japan-wind-power.cnn

  17. Group activity • Work in groups of four. • Write down every vocabulary word we have learned in this unit: one word on each sticky note. • Make a big concept map using the words. • Each group will present its concept map.

  18. Exit ticket

  19. Exit ticket 2

More Related