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Intro to Heat

Intro to Heat. Mr. Oey. Heat. Heat is kinetic energy in a substance. Heat is the motion of the molecules in a substance, not the motion of the substance itself. E nergy that flows between two objects because of a difference in temperature. For example, a metal spoon in hot water.

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Intro to Heat

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  1. Intro to Heat Mr. Oey

  2. Heat • Heat is kinetic energy in a substance. Heat is the motion of the molecules in a substance, not the motion of the substance itself. • Energy that flows between two objects because of a difference in temperature. For example, a metal spoon in hot water.

  3. Measuring Heat Celsius Fahrenheit Freezing: 32 degrees Boiling: 212 degrees • Freezing: 0 degrees • Boiling: 100 degrees

  4. Heat Movement • Molecules move from places of higher temperatures to places with lower temperatures

  5. Thermal Equilibrium • Molecules move from warm to cold until they reach a balanced temperature • This balance is called thermal equilibrium.

  6. Insulators & Conductors 6th Grade Science

  7. Vocabulary Insulator Conductor an object that easily allows the transfer of energy • an object that reduces the transfer of heat

  8. Expansion & Contraction

  9. Vocabulary Solid • particles vibrate in one place Liquid • particles spin and move closely together Gas • particles spin and move fast and far away from each other

  10. Vocabulary Expansion Contraction as molecules are cooled they move closer together and cause objects to shrink (contract) Cooling = Smaller • as molecules are heated they spread out as they move around quickly and cause objects to become larger (expand) • Heating = Bigger

  11. Heat Transfer Kinetic Energy

  12. Vocabulary Convection • Transfer of heat in liquids & gases • Heat rises Radiation • Transfer of heat in empty space w/o any particles Conduction • the transfer of heat by direct contact between solids

  13. Examples Convection • Boiling water • Heating a home Radiation • Sun’s rays heating a car Conduction • A pot heating on a stove

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