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Distribution of Freshwater and Saltwater
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How is Earth’s water distributed among saltwater and freshwater • Earth is known as the “blue planet”
because over 70% of Earth’s surface is covered with water.
• Most of Earth’s freshwater is found in the polar ice caps near the North and South Poles.
• From largest to smallest, the amounts of water on Earth are salt water (97%), solid fresh water (2%), liquid fresh water (1%).
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How is Earth’s water distributed among saltwater and freshwater
• From largest to smallest, the amounts of water on Earth are salt water (97%), solid fresh water (2%), liquid fresh water (1%).
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Salt Water
• Most of the water on Earth is found in Earth’s oceans
• Oceans contain salt water.
• In order of size from largest to smallest, Earth’s oceans are the Pacific, Atlantic, and Indian Oceans.
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Fresh Water• Most of the Earth’s freshwater is located
in the polar caps (ice).
• Underground water, lakes, rivers, and glaciers hold the rest of Earth’s surface freshwater.
• The largest portion of the Earth’s liquid freshwater is trapped between underground layers of rock. This trapped freshwater is called groundwater.
• A glacier is a very slow moving river of ice.
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Distribution of Water on Earth• Saltwater oceans and (salt) lakes (97%)• Freshwater (3%)
– Of the total Freshwater on Earth:76% of freshwater is ice
– 12% of freshwater is Shallow Groundwater – 11% of freshwater is Deep Groundwater – 0.34% of freshwater is found in Lakes and
Rivers – 0.037% of freshwater is Water Vapor
• All living things share less than 1% of total water on Earth!
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Groundwater