1 / 26

Temperature vs. Heat

Temperature vs. Heat. Read each slide When there are questions, answer them before clicking on them. See how much you know! Go to the links to view simulations, videos, etc. What is Temperature. Temperature is a measure of the average Kinetic Energy of the particles of matter in an object.

lyre
Download Presentation

Temperature vs. Heat

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Temperature vs. Heat • Read each slide • When there are questions, answer them before clicking on them. See how much you know! • Go to the links to view simulations, videos, etc.

  2. What is Temperature • Temperature is a measure of the average Kinetic Energy of the particles of matter in an object. • What is Kinetic Energy? -Did you and your shoulder partner answer it? If not, discuss before clicking again -Energy of motion. Click here, Scroll down & see how temperature affects the Kinetic Energy.

  3. What is heat? • Transfer of energy from hotter object to colder one.

  4. Heat Transfer • Heat always moves from a warmer place to a cooler place. • Hot objects in a cooler room will cool to room temperature. • Cold objects in a warmer room will heat up to room temperature.

  5. If a cup of coffee and a red popsicle were left on the table in this room what would happen to them? Why? • The cup of coffee will cool until it reaches room temperature. (heat transferred from hot coffee into cool room) • The popsicle will melt and then the liquid will warm to room temperature. (energy from room transfers into popsicle until equal temperatures.)

  6. There are Three types of heat • Which picture represents which type of heat transfer? • Conduction • Convection • Radiation

  7. Conduction – Transfer of heat through direct contact of molecules in a solid. When you heat a metal strip at one end, the heat travels to the other end. Click on the arrow to watch the animation.

  8. Heat is conducted from hot end  through metal  to hand

  9. Why does metal feel colder than wood, if they are both at the same temperature? • Metal is a conductor, wood is an insulator. • Metal conducts the heat away from your hands. • Wood does not conduct the heat away from your hands as well as the metal, so the wood feels warmer than the metal.

  10. Convection – transfer of heat by movement of molecules of a liquid or gas Warm, less dense air, rises Cool, more dense air, sinks

  11. Click on red arrow to view Motion of Water when heated. Convection Current Cooler water sinks Cools at the surface Hot water rises

  12. The third method of heat transfer How does heat energy get from the Sun to the Earth? There are no particles between the Sun and the Earth so it CANNOT travel by conduction or by convection. ? RADIATION

  13. Radiation – transfer of energy through matter or space in the form of electromagnetic waves. Energy radiates out in the form of light, Ultraviolet radiation, Infrared, etc.

  14. Investigate the 3 types of heat by clicking on picture. Click on each picture to find more examples!

  15. Specific heat • The amount of energy needed to change the temperature of a substance. • Specific heat is why it takes some substances longer to change temperature than others.

  16. If one February day the temperature rises to 88oF would it be comfortable to swim in this pool? Why? • Probably not because water doesn’t heat as fast as air.

  17. If you went to a Florida Beach in September and the temperature dropped from its usual 90oF to 50oF one day what would the water feel like? • It would still be warm. Water changes temperature much slower than the air.

  18. Specific heat • Which takes longer; to change the temperature of air or to change the temperature of water? • Water takes a long time to heat up and a long time to cool down compared to air.

  19. Why is it windy at the seaside?

  20. Sea and Land Breezes • Watch simulation and see how land/ocean temperatures change throughout the day, and how those changes affect the breeze. • Click on the Breeze picture below.

  21. Did you draw the arrows for both types of Breeze? • Explain why each type of breeze blows in the direction it does. • It is NOT due to the movement of the sun across the sky. Go back and read about specific heat, then look at the temperatures.

  22. 10. What type of medium does conduction occur in? Solids

  23. 11. What type of medium does convection occur in? Fluids like liquids and gases 12. Why does hot air rise and cold air sink? Cool air is more dense so it sinks through less dense hot air.

  24. 13. How is radiation different from conduction and convection? Radiation does not require a medium (like air, water, or a solid) to transfer energy.

  25. 14.How are temperature and heat different? • Temperature measures average kinetic energy in a substance. • Heat is the transfer of energy between objects of different temperature.

More Related