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Water in Earth’s Processes

Water in Earth’s Processes. A Wet Planet. EQ: How is Earth’s water distributed among saltwater and freshwater?. How is Earth’s water distributed among saltwater and freshwater. Some people call Earth the “blue planet” because over 70% of Earth’s surface is covered with water.

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Water in Earth’s Processes

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  1. Water in Earth’s Processes

  2. A Wet Planet EQ: How is Earth’s water distributed among saltwater and freshwater?

  3. How is Earth’s water distributed among saltwater and freshwater • Some people call Earth 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 freshwater (1%).

  4. Salt Water • Most of the water on Earth is in Earth’s oceans • Oceans contain salt water. • The salinity, or salt concentration, averages about 3.5%, or 35 grams of salt per kg of water. • In order of size from largest to smallest, Earth’s oceans are the Pacific, Atlantic, and Indian Oceans.

  5. Fresh Water • Most of the Earth’s freshwater is located in the polar caps. • Lakes, rivers, streams, and glaciers hold the rest of Earth’s surface freshwater. • A glacier is a very slow moving river of ice. • A large portion of the rest of Earth’s freshwater is trapped between underground layers of rock. This trapped freshwater is called groundwater.

  6. Water on Earth • Crash Course - Waterhttps://www.youtube.com/watch?v=SkAhB-8CtZg

  7. Quick Check About how much of Earth’s surface is covered by water? A. 0% B. 30% C. 70% D. 100%

  8. Quick Check From the largest to smallest, the amounts of water on Earth are • liquid fresh water, solid fresh water, salt water. B. salt water, solid fresh water, liquid fresh water. C. salt water, liquid fresh water, groundwater. D. groundwater, salt water, solid fresh water.

  9. Quick Check A glacier is A. a river of liquid water. B. an ice cap. C. a solid lake. D. a slow river of ice.

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