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A Change is Going to Come

A Change is Going to Come. Energy at Work. What is Energy?. Energy is the ability to cause change. Objects can gain energy. A pot boiling is gaining heat energy. Objects can lose energy. A bowling ball loses mechanical energy when it hits the bowling pins. Energy appears in many forms.

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A Change is Going to Come

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  1. A Change is Going to Come Energy at Work

  2. What is Energy? • Energy is the ability to cause change

  3. Objects can gain energy.A pot boiling is gaining heat energy.

  4. Objects can lose energy.A bowling ball loses mechanical energy when it hits the bowling pins.

  5. Energy appears in many forms. • heat/thermal • light • sound • mechanical

  6. Thermal Energy • Moves molecules • Is felt as heat

  7. Light Energy • The primary source of light energy is the sun • Light energy produces heat

  8. Sound Energy • All sound begins when something vibrates

  9. Mechanical Energy • The energy of motion

  10. You Decide • Which tasks have energy? • If so, what kind of energy? Thermal Light Sound Mechanical

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