Published on

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

No Downloads
Total Views
On Slideshare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide


  1. 1. Water Pollution2nd lecturewww.draloufi.com
  2. 2. ‫ﻘﺎل ﺗﻌﺎﻠﻰ وﺠﻌﻟﻨﺎ ﻤﻦ اﻠﻣﺎء ﻜﻞ ﺸﻲء ﺣﻲ ا ٔ ﻓﻼ ﻳﺆﻤﻨﻮن ‪‬‬ ‫‪‬‬ ‫ﻪِ ‪: ‬‬ ‫‪‬‬ ‫ﻋﻦ ا ٔ ﺑﻲ ﻫﺮﻳﺮة ﻘﺎل رﺴﻮل اﻠﻟ‬ ‫ﺬ ِ يﻻ َ ﻳ َ ‪ ْ ‬ﺮ ِيﺛ ُ ﻢ ﺗ َ ﻐ ْ ﺘ َ ﺳ ِ ﻞ ُ ﻤ ِﻨ ْ ﻪ ُ ‪. ‬‬ ‫ﺟ‬‫ﻣ َ ﺎء ِ اﻠﺪ ﻓﻲ اﺋ ِﻢاﻳ ِ َ ٓ ﺒﺧﺮ :َﻻ ﻫ‪ َ ُ ‬ﻦ َ ﺠ ُ ﻨ ُ ﺐ ٌ ، ﺛ ُ ﻢ ﻳ َ ﻐ ْ ﺘ َ ﺳ ِ ﻞ ُ‬ ‫و ﻠﻔﻆ و ُ ﻮﻠ َ ﻮ‬ ‫ﻓ ِ ﻴﻪ ِ ‪‬‬ ‫:‬ ‫ﻪِ ‪‬‬ ‫‪‬‬ ‫و ﻋ َ ﻦ ْﻋ َﺠﻦَ ْﺎﺑ ِ رﺮ َ ﺴ ُ ﻮل ِ اﻠﻟ‬ ‫َ ﻬ َ ﻰ ا ن ْ ﻳ ُ ﺒ َ ﺎل َ‪ ‬ﻓ ِ ﻲ اﻠ ْ ﻣ َ ﺎء ِ اﻠﺮ اﻜ ِ ﺪ ِ ‪‬‬ ‫- رواﻫﺎ ﻤﺳﻟﻢ‬
  3. 3. Secret of life ! Why ?
  4. 4. Water is Essential to life on Earth.
  5. 5. Importance of waterOrganisms are composed of much water––70%-95% Supportive external environment for aquatic organisms Cellular medium within which biochemical reactions can occur Transport medium for food, oxygen, and other things needed by cells Means of support-Turgid plant cells /Hydrostatic animal support systems
  6. 6.  Two main processes: precipitation and evaporation Powered by energy from the sun Hydrologic cycle purifies water
  7. 7. Three Forms of Water. Solids: When water becomes very cold and freezes it will change from a liquid to a solid. It has a definite form and shape. Liquids: When water takes the shape of its container it is in a liquid form. Gases: When water is seen in a vapor form and has no definite size or shape it is in a gas form.
  8. 8. Distribution of global water
  9. 9. Distribution of global water
  10. 10. The earths Water Supply97.2% of the Earths water supply is salt water.Only 2.8% is fresh water!
  11. 11. Salt and freshwater relationship
  12. 12. World Water Supply97.200% salt water in the oceans02.014% ice caps and glaciers00.600% groundwater00.009% surface water00.005% soil moisture00.001% atmospheric moisture
  13. 13. Earth as water planet Earth is often referred to as `the water planet. Earth is unique amongst planets of our solar system because of its abundant water - in oceans, in the atmosphere, in glaciers and as fresh water on land. Without water, life could not exist.
  14. 14. The earths freshwater supply Only about 3% of Earths water is fresh. Two percent of the Earths water (about 66% of all fresh water) is in solid form, found in ice caps and glaciers. One percent of all the Earths water in a form useable to humans and land animals. This fresh water is found in lakes, rivers, streams, ponds, and in the ground. (A small amount of water is found as vapor in the atmosphere.)
  15. 15. Distribution of water Ocean Water: The vast majority of water on the planet is the salt water in the oceans and seas. Fresh Surface Water: This is the fresh water in rivers, streams, lakes, ponds and similar bodies of water. Groundwater: The majority of the planets liquid freshwater is stored in underground aquifers. Water that enters an aquifer remains there for an average of 1,400 years!
  16. 16. Water : A precious Natural Resource  We use water for drinking, irrigation, industrial purposes and energy production. Water use  agriculture and energy production - 80%  industry and public use - 20%
  17. 17. Water is used in many ways as a nourisher of plant and animal life, a bearer of food, a prime element of industrial processes, and a medium for transportation
  18. 18. Water consumption/ countries
  19. 19. Human activity disrupts local water cyclesIrrigationClear cutting of forestsWatershed disturbanceLoss of minerals through runoffDesertification
  20. 20. Water consumption/use
  21. 21. Daily use of water
  22. 22. Thankswww.draloufi.com
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.