Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Ccp intro to thermal energy fall 2010


Published on

  • Be the first to comment

  • Be the first to like this

Ccp intro to thermal energy fall 2010

  1. 1. Agenda Bell WorkNotes: Intro to Thermal • What is the Energy difference between a hot cup of coffee and a cold cup ofTemperature Scale coffee? Reseach - List everything youHW: Chp 9 pg 135- can think of. 136, 138-139, 144- 147
  2. 2. • What is the difference between a hot cup of coffee and a cold cup of coffee?- List everything you can think of.
  3. 3. Intro to Thermal Energy December 3, 2012
  4. 4. Objectives1. Explain the motion of molecules in the different states of matter2. Understand the definition of thermal energy3. Describe what happens in thermal equilibrium
  5. 5. Movement of atoms• All matter is constantly moving• Moving particles determines whether an object is solid, liquid, or gas
  6. 6. Kinetic Energy• The warmer an object is the more kinetic energy it has = more thermal energy
  7. 7. Thermal Energy• The total energy of all it’s atoms and molecules
  8. 8. Hot or Cold• Temperature• Thermometer measures temperature by expansion or contraction of a liquidEureka 20
  9. 9. Temperature• Related to the random motion of atoms and molecules• average kinetic energy of molecules
  10. 10. • Thermometers read their own temperature• Energy flows between the thermometer and the object until they reach an equal temperature• This equilibrium is called a Thermal equilibrium
  11. 11. • Who created the temperature scale? • When was it created?• Celsius • How or why did they create it?• Fahrenheit • What is the temp of: (put them in• Kelvin order) – Liquid nitrogen – Body temp – Boiling water – Freezing water – Room temp – Absolute zero • What is the conversion to the other two scales?
  12. 12. Flow of Thermal Energy• From a warmer substance to a colder one• HEAT – thermal energy in motion
  13. 13. What’s cold?• The absence of thermal energy• An object is cold because of the loss in thermal energy• Eureka 21
  14. 14. Heat• Measured in Joules• 4.2 Joules of heat to change 1 gram of water 1 Celsius degree
  15. 15. c alorie• Unit of heat used in the United States• Amount of heat needed to change 1 gram of water 1 Celsius degree• 1 c alorie = 4.2 joules
  16. 16. • Energy ratings of food and fuels are measured by the energy released when they are burned• Kilo calories = C alories we know on food packages (capitol C)
  17. 17. • To the Weight Watcher, the peanut contains 10 C alories• To the physicist, it releases 10,000 c alories of energy when burned or digested