Earth’s Water Lesson 1. How is water distributed on the Earth? 97 % of the world’s Water supply is ocean (salt water). 97 % of the world’s Water supply.

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Presentation transcript:

Earth’s Water Lesson 1

How is water distributed on the Earth? 97 % of the world’s Water supply is ocean (salt water). 97 % of the world’s Water supply is ocean (salt water). 2 % of the world’s water supply is frozen in icecaps and glaciers. 2 % of the world’s water supply is frozen in icecaps and glaciers.

How is water distributed on the Earth? 0.5 % 0.5 % of the world’s water supply is non-consumable water on land. 0.5% 0.5% of the world’s water supply is freshwater available for consumption.

 1. What two factors cause the ocean to become salty?  2. What are the two minerals in the ocean water that make it salty?  3. Reese said” Mr. Suber, how can we only have 0.5% of consumable fresh water on Earth, and not run out of our fresh water supply?” Explain this.

World’s Oceans  Can you name the five world oceans?

World’s Oceans  Atlantic  Pacific  Indian  Arctic  Southern

Pacific Ocean The largest ocean. It is larger than all the land put together. It contains 48% of the world’s seawater. The deepest ocean because the Mariana Trench is located in it. (over 36,000 feet deep)

Atlantic Ocean The second largest ocean. It contains 23% of the world’s seawater. Most traveled ocean routes. Sea floor spreading- This ocean is growing!!

Indian Ocean The warmest ocean. Monsoons occur here It contains 40% of the world’s oil production.

Arctic Ocean The smallest ocean. Located near North Pole It is covered by drifting ice.

Southern Ocean The newest ocean. Recognized in Located at the 60° S Latitude near the South Pole It contains icebergs and deep continental shelves.

World’s Freshwater  Groundwater: water that collects between bits of rock and soil.  What factors affect the groundwater? (Globe – pp. 210)

How does groundwater reach the Earth’s surface?  Water may reach the surface through wells, springs, or geysers.  What is the main difference between a spring and a geyser? (Globe – p. 212)

What is the difference between a river and a lake or pond?  Rivers or streams are running water.  Lakes or ponds are still water.  90% of the continental surface water is found in lakes.  Are lakes fresh or salt water?