1. Unit 2 Changes in Matter 1

2. 5. Steam Energy

3. can push objects and move them
Steam
can push objects and move them
Any matter that is moving is using
mechanical energy

4. The gas produced when water boils
Vocabulary
Steam
The gas produced when water boils

5. When steam pushes on an object, it becomes steam energy

6. Energy that comes from the push of steam
Vocabulary
Steam energy
Energy that comes from the push of steam

7. Steam is a source of
mechanical energy

8. Steam is made in a boiler
A boiler has a large tank and a furnace

9. 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

10. When the fuel burns, the chemical energy stored in it changes into heat energy
The heat energy heats the water in the boiler and changes it into steam

11. You have learned that wind and water can turn wheels with blades
Steam can also turn wheels with blades

12. The energy from steam turbines
can be used in many ways

13. A kind of wheel with blades that is moved by steam
Vocabulary
Steam turbine
A kind of wheel with blades that is moved by steam

14. Many large ships get their energy from steam engines
The steam turbines on these ships
turn the ships’ propellers

15. Propellers make the ships
move through the water

16. Steam turbines are also used to make
electricity
Energy from the turbines is used to run generators which make electricity

17. Many large electric power plants
have steam turbines