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13-2 Forms of Energy

13-2 Forms of Energy. EQ: What are the main forms of energy? Describe their characteristics. What is (ME) Mechanical Energy?. Energy of the position and motion of an object. ME = PE + KE Measured in JOULES! All objects in motion have KE and PE, so they have ME! Examples: car moving

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13-2 Forms of Energy

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  1. 13-2Forms of Energy EQ: What are the main forms of energy? Describe their characteristics

  2. What is (ME) Mechanical Energy? • Energy of the position and motion of an object. • ME = PE + KE • Measured in JOULES! • All objects in motion have KE and PE, so they have ME! • Examples: • car moving • frog jumping • Sounds being made

  3. Page 449: (PE=w x h) (KE = 1/2m x v2) (ME= PE + KE) • 1) 1000J • 2) 2000J • PE = 500 x 6 = 3000J • 3) 5000J

  4. How is there energy within an object? • The particles within an object have potential and kinetic energy too.

  5. What is Thermal Energy? • The movement of the particles within an object. • Measured as temperature (heat) • Faster particles - more thermal energy - higher temperature. • Slower particles -less thermal energy - lower temperature. • Examples: • Ice cream melting • Fire • Hairdryer

  6. What is Electrical Energy? • Energy due to electric charge. • Electric charges can be moving (KE) or stored (PE) • Examples: • Static shock • Lightning • Batteries • Power Lines

  7. What is Chemical Energy? • Energy that is stored within the bonds that hold chemical compounds together. • Examples: • Food • Matches • Cells • Gasoline

  8. What is Nuclear Energy? • Energy that is stored within the nucleus of an atom. • Examples • Fusion (nuclei fusing together within sun) • Fission (nuclei breaking apart)

  9. What is Electromagnetic Energy? • Energy that travels in waves that has electrical and magnetic properties • Examples: • Microwaves • Light • Xrays • Ultraviolet Rays • Radio Waves

  10. Closing:1) What is energy?2) Name the types of energies and give examples: Chemical, Electrical, Electromagnetic, Nuclear, Thermal.3) Explain how all of these energies can be potential and kinetic.

  11. Assessment:WB pages 177-178**** DO TARGET READING DEFINITIONS!!!!!

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