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# Where Is All The Water

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This is an introduction to our Hydrology unit at International School Manila. It looks at how much water there is on our planet and tries to explain the astronomical figures in terms that the students …

This is an introduction to our Hydrology unit at International School Manila. It looks at how much water there is on our planet and tries to explain the astronomical figures in terms that the students (and teachers for that matter) understand.

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• 1. HYDROLOGY AND RIVER LANDFORMS INTRODUCTION: WHERE IS ALL THE WATER?
• 2. HYDROLOGY: WHAT IS IT?
• the study of the movement, distribution, and quality of water throughout the Earth.
• addresses both the hydrologic cycle and water resources .
• 3. WHERE IS ALL THE WATER?
• Total volume of all earths water is…
• 1 360 000 000 cubic kilometers (est.)
• Total water volume in oceans and seas (saline water)
• 1 320 000 000 cubic kilometers (est.)
• 4. WHERE IS ALL THE WATER?
• This leaves 40 000 000 cubic kilometers as fresh water :
• Ice
• Lakes
• Rivers
• Underground (Rock and Soil)
• Atmosphere
• In or on vegetation
• 5. HOW MUCH WATER IS THERE IN MORE UNDERSTANDABLE TERMS?
• What is a cubic meter?
• 6. How much water is there in a cubic meter?
• 1000 liters of water
• 7. How much water is there in an Olympic size swimming pool?
• 8. How much water is there in an Olympic size swimming pool?
• 9. How much water is there in an Olympic size swimming pool?
• Length x width x depth
• 50 meters x 25 meters x 2 meters
• = 2500 cubic meters
• = 2 500 000 liters of water
• 10. How many cubic meters are there in a cubic kilometer?
• 1 cubic km = 1000 x 1000 x 1000 meters
• 1 cubic km = 1 000 000 000 (1 billion cubic meters)
• 11. How much water is there in 1 cubic kilometer (one billion cubic meters)?
• 1 billion cubic meters x 1000 liters
• = 1 000 000 000 000 ( 1 trillion liters)
• or 400 000 Olympic size pools
• 12. How many liters in all the water of the earth? Pheeeewww!!!
• 1 360 000 000 cubic kilometers x 1 trillion liters
• 1 360 000 000 000 000 000 000 liters
• or 1.36 sextillion liters
• Fresh water is only 3% of this
• or 40.8 quintillion liters
• 13. HOW MANY PEOPLE ON EARTH?
• AS OF 9 30 A.M. ON JAN 6th 2009 THERE WERE….
• 6, 720,593,800 PEOPLE ON EARTH (EST)
• IF ALL THE FRESH WATER WAS SHARED OUT EQUALLY EACH PERSON WOULD HAVE….
• ABOUT 6.1 BILLION LITERS OF WATER EACH!!!!!!!!!!!
• YEP IT’S TRUE ! THE ARITHMETIC IS CORRECT.
• BUT…………….?????