1. Thermal Energy
Thermal energy is the total kinetic energy of the particles in an object
Objects with more thermal energy have faster moving particles
Objects with less thermal energy have slower moving particles
More total molecules also means more thermal energy
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2. Thermal Energy vs. Heat
Heat is the transfer of energy between objects that are at different temperatures. Absolute Zero is 0 Kelvin (0K), the temperature where no molecules will move!

3. Three Ways to Transfer Thermal Energy
Conduction-transferring thermal energy from one substance to another through direct contact
Ex. The handle of a metal spoon in a bowl of hot soup gets hot even though its not in the soup
Convection-transfer of thermal energy by the movement of a liquid or gas
Ex. Water boils in a pot on the stove
Radiation-transfer of thermal energy through matter or space
Ex. Light waves from the sun
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5. What happens when you rub your hands together very fast
What happens when you rub your hands together very fast? How does thermal energy impact mechanical energy? What happens in EVERY energy transfer and makes it seem like energy is “lost”?

6. Which boy is experiencing more friction? Why???