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Science 9- Chapter 6

Science 9- Chapter 6

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Heat Presentation Transcript

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