1. THERMAL ENERGY Great videos to engage students*
07/16/96
THERMAL ENERGY
Great videos to engage students *

2. Thermal Energy
Thermal energy is the kinetic energy of moving particles in an object.
It depends on temperature, mass, and type of substance.

3. Temperature is the measure of how hot or cold something is.*
07/16/96
Temperature
Temperature is the measure of how hot or cold something is.
Eureka! Episode 21 Temperature vs Heat *

4. Temperature
Temperature is the average kinetic energy of moving particles in matter.
Higher Temperature 

5. Thermal Energy Relationships
As temperature increases, so does thermal energy because the kinetic energy in the particles increased.

6. Thermal Energy Relationships
Even if the temperature doesn’t change in an object, the thermal energy in a more massive substance is higher.

7. Thermal Energy Relationships*
07/16/96
Thermal Energy Relationships
Which beaker of water has more energy?
200 mL
80ºC A
400 mL B
Click once more for A to disappear. Even though they have the same temperature B has more mass. *

8. Heat
Heat is a measure of how much thermal energy is transferred from a warmer substance to a cooler substance.

9. Heat Transfer
Heat transfer is the flow of energy from one object to another.
Heat always flows from the warmer object to the colder.

10. Heat Transfer Cup gets cooler while hand gets warmer.
Ice gets warmer while hand gets cooler.

11. Heat Transfer A B 80ºC 10ºC Why does A feel hot and B feels cold?*
07/16/96
Heat Transfer
Why does A feel hot and B feels cold?
80ºC A
10ºC B
Heat flows from A to your hand = hot
Heat flows from your hand to B = cold *

12. Land heats up and cools down faster than water.
Specific Heat
Some things heat up or cool down faster.
Land heats up and cools down faster than water.

13. Heat Transfer - Conduction
Conduction is the transfer of thermal energy from particle to particle between two objects that are touching.

14. Heat Transfer - Conduction*
07/16/96
Heat Transfer - Conduction
Eureka! Episode 24 Conduction *

15. Heat Transfer - Conduction
Examples:
A pot gets hot on the stove.
A coin gets warmer the longer you hold it in your hand.
YOUR TURN: Put a coin in your hand. I will set the timer for 1 minute and then 2 minutes. What do you observe?

16. Heat Transfer - Conduction*
07/16/96
Heat Transfer - Conduction
How does this picture show conduction?
The rod is being heated by the flame because it is directly over it. Then the hand would be getting warm because heat would be traveling down the rod. *

17. Insulator
A material limits how much heat can go through it.

18. Insulator
Examples:
A cooler keeps drinks cold. A wooden pot handle is safe to touch.
A marble floor feels cool.
A jacket keeps you warm.

19. Explain how these wooden stirring spoons show insulation.
Insulator
Explain how these wooden stirring spoons show insulation.

20. Heat Transfer - Convection*
07/16/96
Heat Transfer - Convection
Convection is the transfer of thermal energy by the movement of fluids.
Eureka! Episode 27 Convection *

21. Heat Transfer - Convection

22. Heat Transfer - Convection
Example:
The Part of the ocean near the surface is warmest. The bottom is coldest.

23. Heat Transfer - Convection*
07/16/96
Heat Transfer - Convection
Explain how this picture shows convection. *

24. Heat Transfer - Radiation*
07/16/96
Heat Transfer - Radiation
Radiation is the transfer of heat energy by waves moving through space.
ALL objects radiate energy.
Radiation (Eureka!) *

25. Heat Transfer - Radiation

26. Heat Transfer - Radiation
Example:
Heat lamps keep food warm on a serving bar.

27. Explain how this photo shows the three forms of energy transformation.
Heat Transfer –
Review
Explain how this photo shows the three forms of energy transformation.

28. Heat Transfer Video Clip

29. Thermal Energy
Thermal energy is the __________ energy of all the particles in an object.
Thermal energy depends on ____________, _______________, and type of substance.
Temperature is the measure of how _____________ or
____________ something is.
As temperature ________________ so does thermal energy
because the _____________ energy in the particles
________________.
Heat ____________ is the flow of energy from one object to another.
Heat always flows from the ___________ object to the
____________.
Some things heat up or cool down __________________.
_______________ heats up and cools down faster than
___________.

30. _________________ is the transfer of thermal energy by direct contact between two materials with different temperatures.
How does this picture show conduction?
___________________________________
_________________ is the transfer of thermal energy through a liquid or a gas with different temperature.
Explain how this picture shows convection.
_________________________________
__________________________________
_______________________
__________________ is the transfer of heat energy by waves moving
through space. _________objects radiate energy.
Example of Conduction:
Example of Convection:
Example of Radiation: