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5-minute Bell Work

Dive into the intricate web of water distribution, from watersheds to ocean circulation, exploring factors influencing surface runoff, ocean properties, and hydroelectricity generation. Learn about pollution effects and strategies for water conservation.

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5-minute Bell Work

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Presentation Transcript

  1. 5-minute Bell Work What was the most motivating or inspiring speech, quotation or advice that you have heard, received or read? • Task: Write down both the question and today’s date in your notebook. Answer the question as concisely as possible.

  2. HYDROSPHERE Chapter Review September 24 2012

  3. Concept Map

  4. Concept Map

  5. Distribution Fig. 1: McGill University ESYS 200 Winter 2011

  6. Water Cycle Fig. 2: http://en.wikipedia.org/wiki/File:Water_cycle.png

  7. Watershed Fig. 3: http://www.recycleworks.org/kids/watershed.html

  8. St. Lawrence River Watershed Fig. 4: http://www.ec.gc.ca/eau-water/default.asp?lang=En&n=746FC7D7-1

  9. Where we were Last Week Fig. 5: http://www.zollitschcanoeadventures.com/maps/saguenay_large.jpg

  10. Surface Runoff Earth has ~1 part land and ~2 parts water. Due to surface area, there is more evaporation from water than land. If 2.5 units are evaporated from each part of water and 1 unit is evaporated from land, we have 2.5 units*2 parts + 1 unit = 6 units evaporated in total. Due to global climate circulation, water vapour gets equally distributed, resulting in 6 units/ 3 parts = 2 units of rainfall. Since 2 units of rainfall > 1 unit of evaporation on land, there is more precipitation than evaporation on land, resulting in surface runoff.

  11. Factors • Topography: steep slopes drain easier • Geology: water flows better through crushed rocks than compact clay • Climate: water flows quicker during a heavy downpour than a drought • Vegetation: water flows quicker in non-vegetative areas • Human activities • Agricultural: irrigation changes course of river flow • Industrial: dams prevent water from flowing freely • Urban development: more surface runoff on concrete sidewalks than unpaved ground

  12. Ocean Temperature Fig. 6: http://www.cartage.org.lb/en/themes/sciences/earthscience/oceanography/OceanWater/Temperature/Temperature.htm

  13. Ocean Salinity • Higher salinity (more salt, less liquid)  denser solution • Ocean circulation • Nutrients circulation Fig. 7: Parc national du Fjord-du-Saguenay, 2012

  14. Thermohaline Circulation • Gulf Stream affects climate of the east coast Fig. 8: http://thewe.cc/thewe_/images_5/_/environment/global-thermohaline-circulation.jpg

  15. Pack ice vs. Glacier Table 1: Differences between Pack Ice and Glacier

  16. Hydroelectricity Table 2: Pros and Cons of Hydroelectricity Generation

  17. Hydroelectricity Fig. 9: http://www.txucorp.com/responsibility/education/generation/hydroelectric.aspx

  18. Pollutions • Contaminants (point or non-point source): • Inorganic: Pb, As, Hg, NOX, P • Organic: Insecticides, pesticides, etc. • Microbial: Viruses and harmful bacteria • Radioactive: U, Pu, Rn, etc. • Effects/ consequences: • Eutrophication • Contamination of water sources • Marine life affected

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