2. Chapter 6: Section 2 Temperature

3. 2 things you need to know: 1.All things are made of atoms or particles that are too small to see

4.  2. The particles are always moving in all directions.

5. Particle Movement in a Solid, Liquid, Gas  Students as particles demo

6. Back to Temperature The measure of kinetic energy of the particles in an object Temperature = Kinetic energy of particles

7. Measuring Temperature  2 ways: 1.Fahrenheit Scale: At what temp does H 2 O freeze?________ At what temp does H 2 O boil?____

8. Measuring Temperature 2. Celcius Scale: At what temp does water freeze?_____ At what temp does water boil?_____

9. What is heat?  Think about this :  What happens to your hand when you grab a cold drink out of the fridge?

10. Heat  The transfer of energy from one object to another  Flows from warmer to cooler objects

11. Let’s go back to this situation Knowing what you know about heat…think about this:  What happens to your hand when you grab a cold drink out of the fridge?

12. Heat Transfer  There are 3 types:  Conduction  Convection  Radiation

13. Conduction Transfer of energy by collisions of molecules in a material (2 things touching) Usually happens in solids

14. Conduction

15. Which spoon would you rather cook with? metal wooden Metal is a good conductor

16. Insulators  Some things are bad conductors  They can be used as insulators  Sweaters  Blankets  Plastics  Wood  rubber

17. Convection  Heat is transferred between objects of different temperatures  Most common in gases and liquids

18. Examples of Convection Birds can float with out flapping wings Heating your home

19. Radiation  Transfer of heat energy by waves

20. Examples of Radiation  Heat from fire  Microwave heating food

21. Heat  BrainPop BrainPop

22. Quick Review  How are temperature and kinetic energy related?  Heat is transferred from ______ things to _______things.  What are the 3 types of heat transfer?  Which is more common in solids?  Which is more common in liquid/gas?