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Natural Sources of Water

Natural Sources of Water. What is a “natural” source of water? Where on Earth do I find this water?. Until the year 2000, there were four recognized oceans: the Pacific, Atlantic, Indian, and Arctic.

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Natural Sources of Water

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  1. Natural Sources of Water What is a “natural” source of water? Where on Earth do I find this water?

  2. Until the year 2000, there were four recognized oceans: the Pacific, Atlantic, Indian, and Arctic. In the Spring of 2000, the International Hydrographic Organization recognized a new ocean: the Southern Ocean. About 71% of the Earth is covered by oceans. Ocean water is salty. The Earth’s oceans are connected and form a continuous body of water. Oceans

  3. Oceans Arctic Atlantic Pacific Indian Southern

  4. Seas • There are also many seas. • Seas are smaller branches of an ocean. • Seas are often partly enclosed by land. • The largest seas are the South China Sea, the Caribbean Sea, and the Mediterranean Sea.

  5. Seas North Sea South China Sea Mediterranean Sea Caribbean Sea Tasman Sea

  6. Rivers • A river is a natural stream of water, usually freshwater, flowing toward an ocean, a lake or another stream. • Usually larger streams are called rivers while smaller streams are called creeks, or brooks.

  7. Rivers Major Rivers of The World

  8. Rivers of Texas Which river do you live near?

  9. Lakes • A lake is an inland body of water that is not part of the ocean. • They larger and deeper than a pond. • Most lakes on Earth are freshwater. • More than 60% of the Earth’s lakes are in Canada.

  10. Lakes Crater Lake: Oregon Great Salt Lake:Utah Lake Michigan: Michigan, Wisconsin, Illinois, Indiana Lake Tahoe: Nevada, California Caddo Lake: Texas

  11. Ponds • A pond is a body of water smaller than a lake. • Ponds are sometimes defined as “a man-made or natural body of water that is between 1m2 and 2 hectares in area, and holds water for four months of the year or more”. • 1m2 is about this big, 2 hectares is about the size of two track fields

  12. Canals • Canals are artificial channels for water. • There are two types of canals: • Irrigation canals, which are used for the delivery of water • Waterways, which are navigable transportation canals used for passage of goods and people, often connected to existing lakes, rivers or oceans.

  13. Glaciers • Presently, 10% of land area is covered with glaciers. • Glaciers store about 75% of the world's freshwater. • In the United States, glaciers cover over 75,000 square kilometers, with most of the glaciers located in Alaska. • Glacial ice often appears blue when it has become very dense. Mt. Cook: New Zealand Mt. Hood: Oregon

  14. Polar Ice Caps • Earth’s north pole is covered by floating pack ice (sea ice) over the Arctic Ocean. • The land mass of the Earth's south pole in Antarctica, is covered by the Antarctic Ice Sheet. • An iceberg is a large piece of freshwater ice that has broken off from a snow-formed glacier or ice shelf and is floating in open water.

  15. Aquifers • An aquifer is an underground layer of rock that allows water to drip through it. • It can also be an area of gravel, sand, silt or clay from which groundwater can be extracted using a water well.

  16. Puddles? • A puddle is a small accumulation of water, uncontained on a surface. • It can form either in little hollow areas in the surface, or directly upon the flat surface. • A puddle is generally considered to be small enough to step over or shallow enough to walk through. • Puddles commonly form during rainstorms.

  17. What Natural Sources of Water do You Have in Your Area?

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