11. 2 Steam Energy Energy that comes from the push of steam

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2

Steam Energy

Energy that comes fromthe push of steam

3

When water boils,it turns into a gas

This gas is calledsteam

4

Steam can push objects and move

them

Any matter that is moving is using

mechanical energy

5

Steam is a source ofmechanical energy

6

Steam is madein a boiler

A boiler has a large tankand a furnace

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The tank holds water,and the furnace burns fuel

to heat the water

Coal, oil, and wood are three (3)kinds of fuel used to

produce steam

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When the fuel burns,the chemical energy stored in it

changes into heat energy

The heat energyheats the water in the boiler

andchanges it into steam

9

You have learned that wind and water

can turn wheels with blades

Steam can also turn wheels with blades

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Steam Turbine

A kind of wheel with bladesthat is moved by steam

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The energy from steam turbinescan be used in many ways

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Many large shipsget their energy from

steam engines

The steam turbines on these ships

turn the ships’ propellers

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Propellers make the shipsmove through the water

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Steam turbinesare also used to make

electricity

Energy from the turbinesis used to run generators

which make electricity

15

Many large electric power plantshave steam turbines