1. Principles of Science Energy Transfer and Transformations – What is the role of energy in our world?

2. 9.1 - Energy cannot be created or destroyed; however, energy can be converted from one form to another. Energy enters the Earth system primarily as solar radiation, is captured by materials and photosynthetic processes, and eventually is transformed into heat.

3. D 3. Describe energy transformations among heat, light, electricity and motion.

4. First Law of Thermodynamics (Law of conservation of energy) Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another. Source:http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookener1.html

5. Example of 1 st Law of Thermodynamics Work means to add energy to a system. Phases of matter graph. Throwing a ball into the air. More: http://bit.ly/KahnAcadFLOThttp://bit.ly/KahnAcadFLOT

6. The Second Law of Thermodynamics Entropy Things tend to go towards disorder or randomness.

7. 2 nd Law of Thermodynamics example Heat travels from a warm object to a cool object. Examples: Ice cube in a glass of water, beaker on a table (loss of heat content). Cool Warm (impossible unless you add work or energy—A/C). More: http://bit.ly/KahnAcadSLOThttp://bit.ly/KahnAcadSLOT

9. Potential Energy Stored energy Energy of position Examples

10. Kinetic Energy Energy of motion Example: Average Kinetic Energy Example: Total Kinetic Energy

11. Group activity Think of 3 examples of potential energy Think how they would be converted to kinetic energy Example Water Wheel.

14. Why am I floating?

15. Review homogenous and heterogenous.