Water and Wind Power.

Is one of the least expensive sources of energy:

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Wherever water falls from a high place to a low one, it creates a lot of...

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_________________ are built on rivers and lakes to use this energy. This water is sent through pipes to water turbines hundreds of meters below.

The water energy that the turbines collect is used to run a _______________

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A __________________ is water that shoots up from the ground in the form of liquid and gas or vapor.

• geyser

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• electricity

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____________________ occurs when the sun warms the surface of Earth. Some parts of Earth absorb more heat than others.

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Moving air is called:

• sun

• wind

• water power

• turbines

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____________________ , _______________________ are examples of strong wind.

• Tornadoes and hurricanes

• water power and wind power

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They used wind power thousands of years ago:

• Americans

• Egyptians

• Mayans

• Coreans

Can be found around the world. Like the ancient egyptians. People use wind to push against sails and to make sailboats move across water.

• boats

• solar energy

• windmill

• dam