1. EARTHS WATER SUPPLY

2. SOME QUICK FACTS 70% of the Earths surface is covered with water 70% of the Earths surface is covered with water 97% of Earths water is salt, 3% is fresh 97% of Earths water is salt, 3% is fresh Salinity is the amount of salt that is dissolved in water Salinity is the amount of salt that is dissolved in water

3. UNDERGROUND WATER Scientist approximate that about 1/3 of the worlds fresh water lies underground Scientist approximate that about 1/3 of the worlds fresh water lies underground

4. UNDERGROUND WATER Water Table: The upper surface of the groundwater zone Water Table: The upper surface of the groundwater zone Groundwater Zone: The area where water fills the space between the soil and cracks in rocks Groundwater Zone: The area where water fills the space between the soil and cracks in rocks Aquifer- An underground fresh water reservoir Aquifer- An underground fresh water reservoir

5. GLACIERS AND ICE SHEETS A glacier is a huge mass of ice slowly flowing over a land mass A glacier is a huge mass of ice slowly flowing over a land mass An ice sheet is a particularly large glacier that covers the land. They are also referred to as polar ice caps. An ice sheet is a particularly large glacier that covers the land. They are also referred to as polar ice caps.

6. THE WATER CYCLE

7. WATERSHEDS A watershed is an area of land where all the water eventually drains into one main body of water, such as a stream, river, wetland, lake, or ocean. A watershed is an area of land where all the water eventually drains into one main body of water, such as a stream, river, wetland, lake, or ocean.