2. ENERGY Transformations PowerPoint adapted from Jefferson Lab Honors Physical Science Ms. Mandel 2014

3. State Standards Describe energy transformations among heat, light, electricity and motion. Explain how electricity is used to produce heat and light in incandescent bulbs and heating elements.

4. Learning Targets I can differentiate between potential and kinetic energy. I can describe energy transformations for a variety of objects.

5. What is Energy? Energy is all around you! You can hear energy as sound. You can see energy as light. And you can feel it as wind.

6. When Do You Use Energy? You use energy when you: hit a softball lift your book bag compress a spring And many more……

7. For growth and movement. Why Do Living Things Need Energy?

8. What is the Difference Between Kinetic and Potential Energy? Potential Energy Stored energy Gravitational potential energy the energy possessed by a body because of its elevation (height) relative to a lower elevation Kinetic Energy the energy an object possesses due to its motion

9. Forms of Energy

10. Can You Name the Different Forms of Energy? Chemical Nuclear Mechanical Light (Electromagnetic) Thermal Electrical

11. What is Mechanical Energy? o Energy due to an object’s motion (kinetic) or position (potential). The bowling ball has mechanical energy. When the ball strikes the pins, mechanical energy is transferred to the pins!

12. Why is Sound Considered to be Mechanical Energy? form of energy that is associated with vibrations of matter Sound waves

13. Examples of Mechanical Energy

14. What is Electromagnetic Energy? o Light energy o Includes energy from gamma rays, xrays, ultraviolet rays, visible light, infrared rays, microwave and radio bands

15. Electromagnetic Spectrum

16. What is Electrical Energy? o Energy caused by the movement of electrons o Easily transported through power lines and converted into other forms of energy

17. What is Chemical Energy? o Energy that is available for release from chemical reactions. The chemical bonds in a matchstick store energy that is transformed into thermal energy when the match is struck.

18. Examples of Chemical Energy

19. What is Thermal Energy? o Heat energy o The heat energy of an object determines how active its atoms are. A hot object is one whose atoms and molecules are excited and show rapid movement. A cooler object's molecules and atoms will show less movement.

20. What is Nuclear Energy? The nucleus of an atom is the source of nuclear energy.

21. Nuclear Energy When the nucleus splits (fission), nuclear energy is released in the form of heat energy and light energy. Nuclear energy is also released when nuclei collide at high speeds and join (fussion).

22. Nuclear Energy The sun’s energy is produced from a nuclear fusion reaction in which hydrogen nuclei fuse to form helium nuclei.

23. Nuclear Energy Nuclear energy is the most concentrated form of energy. Fission or Fusion?

24. Learning Target Checkpoint How do you differentiate between kinetic and potential energy?

25. Learning Target Checkpoint What type of energy cooks food in a microwave oven? ELECTROMAGNETIC ENERGY What type of energy is the spinning plate inside of a microwave oven? MECHANICAL ENERGY

26. Learning Target Checkpoint Electrical energy is transported to your house through power lines. When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy? MECHANICAL ENERGY

27. Learning Target Checkpoint What energy transformation occurs when an electric lamp is turned on? ELECTRICAL ENERGY  ELECTROMAGNETIC ENERGY

28. What types of energy are shown below? Mechanical and Thermal Energy (Don’t forget friction)

29. What type of energy is shown below? Chemical Energy

30. What types of energy are shown below? Electrical, Mechanical and Electromagnetic Energy

31. What type of energy is shown below? Chemical Energy

32. What type of energy is shown below? Thermal Energy