1. Energy Transformations and Heat

2. Heat Energy
Def’n: amount of thermal energy that is transferred from one place to another through a temperature difference

3. Heat
# of particles (how much mass). Less mass allows substance to get hot faster
Degree of agitation (movement) of the particles
High agitation = high temperature
Low agitation = low temperature

4. Temperature Def’n: degree of agitation of particles
It doesn’t matter how much mass you have
E.g.

5. Heat Transfer

6. Heat Transfer

7. Heat Transfer
Heat is transferred from warm to cold until equilibrium is reached
Cold energy does not exist. Cold is simply the absence of heat
Ex. 2 buckets

9. Recap Heat depends on: mass and agitation
Temperature depends on: agitation
You transfer heat, but you measure temeprature
You cannot transfer cold

10. Energy Transformations

11. What is Energy? What is it good for? What do we use it for?
How is it created?

12. Types of Energy Potential versus Kinetic
Potential: Energy is stored in an object at rest
Kinetic: Energy of a moving object

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16. Energy Types
Chemical: energy stored in a substance that can be released/absorbed when bonds are broken
Electric: energy made available by the flow of electric charges
Sound: energy contained and transported by sound waves
Kinetic: energy of movement

17. Energy Types Potential: stored energy due to its position
Mechanical: potential energy combined with kinetic energy
Thermal energy: energy resulting from random motion of particles due to heat
Radiation energy: energy transported in electromagnetic waves

18. Energy Types Wind: energy generated from wind
Elastic energy: potential energy stored as a result of deformation of an elastic object
Hydraulic: energy resulting from flow of water
Nuclear: energy stored in the nucleus

19. Energy Transfer
Def: The movement of energy from one place to another

20. Energy Transformation
Def’n: Changing of energy from one form to another