Water

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Water

  1. 1. WATER
  2. 2. Introduction• Water is one of the most importantsubstances on earth.• All plants and animals must havewater to survive. If there was nowater there would be no life onearth.
  3. 3. Composition Of Water• Water is a chemical substance withthe chemical formula H2O.• A water molecule contains one oxygen andtwo hydrogen atoms connected by covalentbonds.• Water is a liquid at ambient conditions, butit often co-exists on Earth withits solid state, ice, and gaseous state(water vapour or steam).• Water also exists in a liquid crystal statenear hydrophilic surfaces.
  4. 4. • Water covers 70.9% ofthe Earths surface, andis vital for all knownforms of life.• Oceans hold 97% ofsurfacewater, glaciers andpolar ice caps 2.4%, andother land surface watersuchas rivers, lakes and ponds 0.6%.• A very small amount ofthe Earths water iscontained withinbiological bodies andmanufactured products.
  5. 5. Hydrological Cycle
  6. 6. Sources Of WaterSurface water Under River FlowGroundwater flow Frozen Water
  7. 7. Uses Of WaterAgricultureIndustryHousehold
  8. 8. Water Conservation• Water conservation refers to reducing theusage of water and recycling of waste waterfor different purposes such as cleaning,manufacturing and agricultural irrigation.
  9. 9. Why to Conserve Water?• When you use water wisely, you helpthe environment.• When you use water wisely, you saveenergy.• When you use water wisely, you savemoney.
  10. 10. How to Conserve Water• Engineering practices: practices basedon modifications in plumbing, fixtures,or water supply operating procedures.• Behavioural practices: practices basedon changing water use habits.
  11. 11. Water Conserving Facts• Around 75% of the water used inside thehome is consumed in the bathroom.• Every toilet flush uses up to 5 gallons ofwater.• More than 30% of household water isconsumed in outdoors, such as wateringlawns.• Treating water and delivering it intohouseholds requires a lot of energy. A faucetwhen run for 5 minutes takes as much energyas running a 60-watt light bulb for 14 hours.• We can save up to 8 gallons of water perday, when we turn the tap off while brushingour teeth. By doing so, we will be able tosave about 200 gallons of water every
  12. 12. Its in our hands! SaveWater, Save Life

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