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# Heat

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Science 9- Chapter 6

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### Heat

1. 1. Heat<br />
2. 2. Heat<br />A form of energy<br />The motion of particles in matter<br />Flows from warmer objects to cooler ones<br />
3. 3. Did you Know<br />
4. 4. Heat can do work<br />
5. 5. Steam Engines<br />Solar Energy <br />A Toaster<br />Automobiles <br />
6. 6. What produces <br />heat energy?<br />Rubbing your hands together produces heat. <br />
7. 7. Nuclear reactions<br />In the sun<br />The earth’s most important heat source<br />
8. 8. Mechanical Energy<br />(The energy of motion) <br />-Rubbing your <br />hands together<br />-Striking a match<br />
9. 9. Chemical Energy<br />Sometimes heat is released when substances react chemically with each other. <br />
10. 10. Electricity<br />What other appliances can you name that change electricity into heat energy? <br />
11. 11. Temperature<br />A measure of how fast an object’s particles are moving. <br />
12. 12. Touching an object is not the safest or most accurate way to measure its temperature. <br />
13. 13. Use a thermometer to measure temperature accurately. <br />
14. 14. Water= <br />0 degrees Celsius<br />32 degrees Fahrenheit<br />Freezing point- The temperature at which a liquid changes to a solid. <br />
15. 15. Melting Point- The temperature at which a solid changes into a liquid. <br />Same as freezing point, but used when an object is being heated. <br />
16. 16. Boiling point- Temperature at which a substance changes from a liquid to a gas. <br />Water= <br />100 degrees Celsius<br />212 degrees Fahrenheit<br />
17. 17. Every substance has its own<br />Freezing and boiling points<br />
18. 18. How does heat<br />Travel? <br />
19. 19. Radiation<br />The movement of energy through space. <br />
20. 20. Conduction-<br />The movement of heat energy from one molecule to the next. <br />
21. 21. Convection-<br />Flow of energy that occurs when a warm liquid or gas rises. <br />Heat makes <br />things rise!<br />
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