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Chapter 3: Energy

Chapter 3: Energy. What are some types of energy?. Brainstorm about a type of energy as a group. Define this type of energy Where does it come from? How do we use it? What are some common examples?. Elastic Energy. Energy stored in an object due to its compression or extension.

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Chapter 3: Energy

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  1. Chapter 3: Energy

  2. What are some types of energy?

  3. Brainstorm about a type of energy as a group • Define this type of energy • Where does it come from? • How do we use it? • What are some common examples?

  4. Elastic Energy • Energy stored in an object due to its compression or extension

  5. Electrical Energy • Energy resulting from the ordered movement of electrons from one atom to another

  6. Thermal Energy • Energy resulting from the random motion of all particles in a substance

  7. Radiation Energy • Energy contained in and transported by electromagnetic waves

  8. Radiation Energy • Energy contained in andtransported by electromagnetic waves

  9. Chemical Energy • Energy stored in molecular bonds

  10. Sound energy • Energy contained in and transported in sound waves

  11. Hydraulic energy • Energy resulting from the flow of water

  12. Nuclear energy • Energy stored in atomic nuclei

  13. What energy is involved in each image?

  14. The Law of Conservation of Energy • Energy can be neither created nor destroyed; it can only be transferred or transformed. • The total amount of energy in an isolated system always remains constant.

  15. How do we define energy?

  16. How do we define energy? • Energy can cause change

  17. What is going on in these pictures? • Energy can be used to do work

  18. How do we define energy? Energy is the ability to do work orcause change

  19. How do we measure energy? • Energy has two components • Force (Newtons) • Distance (meters) Energy = 1 joule = 1 N x 1 m

  20. How do we measure energy?

  21. kWh = kilowatt hour • 1 kWh = 3 600 000 J

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