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What do we need to survive?

What do we need to survive?. Essentials. Water Food Shelter Air. 70% of the Earth is COVERED IN WATER. Key Terms. Aquifer Fresh Water Salt Water Salinity Watershed Water Table Permeable/Impermeable Concentration (e.g. parts per million – ppm ) Dilution Chlorine.

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What do we need to survive?

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  1. What do we need to survive?

  2. Essentials • Water • Food • Shelter • Air

  3. 70% of the Earth is COVERED IN WATER

  4. Key Terms Aquifer Fresh Water Salt Water Salinity Watershed Water Table Permeable/Impermeable Concentration (e.g. parts per million –ppm) Dilution Chlorine

  5. The Water Cycle . Cooling Cooling Condensation Condensation Precipitation Pressure Drop Pressure Drop Transpiration Run-Off Evaporation Groundwater Ocean

  6. SEA/SALT WATER SALINITY: A measure of how much salt and other elements is dissolved in water (Freshwater has dissolved salt, but is < 1%). On average, Salinity is 3.5% The DEAD SEA in Jordan/Israel is about 31.5% salinity

  7. Composition of Seawater

  8. Canada is one of the most fortunate nations when it comes to available freshwater: -Canada has only 0.5% of the world's population -landmass contains approximately 9% of the world's renewable water supply (i.e. water replenished by precipitation on a short-term basis).

  9. FRESHWATER • Includes water found in Rivers, Streams, Lakes, Wetlands WATERSHED: Area of land where all water drains into one MAIN body of water

  10. Canada’s Watersheds What separates the Pacific and Arctic/Hudson Watersheds?

  11. DEMONSTRATION ON DILUTION

  12. Parts Per.. Parts per hundred (%) Parts per thousand Parts per million (ppm) Parts per billion (ppb) Parts per trillion (ppt) Chlorine: vomit at 30 ppm Lung Damage at 60 ppm

  13. Chlorine is used to disinfect water and kill small (potentially dangerous) organisms. • Fluoride is also added to water by some cities (including Mississauga and Brampton) Why?

  14. STORMWATER vs. SANITARY SEWERS What is going down the drain? (treated) SANITARY SEWERS What is going down the sewers? (untreated) STORMWATER SEWERS WHY ARE SEWER COVERS ROUND?

  15. What does this demonstration and your knowledge of water tell you about the importance of urban planning and development? Are we doing a good job of that in the Humber River Watershed? Explain.

  16. GROUND WATER

  17. Ground vs. Surface Water

  18. Groundwater or Surface Water?

  19. Don’t throw your junk in my backyard! We all create trash. If you were to decide where to put one, where would you put it? Why? Think about the effects and costs to tax payers. Explain your choice using some of the terms you learned today.

  20. Pollution of our water systems

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