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Today’s Agenda…11/4

Learn about the law of conservation of energy, distinguish between kinetic and potential energy, and explore their effects on objects. Complete homework and review materials. Study pack #3 included.

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Today’s Agenda…11/4

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  1. Today’s Agenda…11/4 • Bellringer: What is the law of conservation of energy? • Turn in Homework • Notes on Kinetic and Potential Energy • Homework • Don’t forget to study for your flashback tomorrow! 

  2. Kinetic and Potential Energy Study Pack #3

  3. Review • True or False • Energy is the ability to cause change • Energy exists in many forms • When energy is transformed into a new form, some of the energy is lost • Energy cannot be created or destroyed

  4. Today’s Goals… • I can distinguish between kinetic and potential energy.

  5. Energy • Energy is the ability to cause change • Energy exists in many forms • There are two types of energy that relate to motion, kinetic and potential

  6. Kinetic Energy • Things that move can cause change • Kinetic energy is the energy an object has due to its MOTION • If an object isn’t moving, it doesn’t have kinetic energy

  7. Kinetic Energy • What effect does speed have on kinetic energy? • Kinetic energy increases as an object goes faster • A car going 60 mph has more kinetic energy than a car going 30 mph

  8. Kinetic Energy • What effect does mass have on kinetic energy? • Kinetic energy increases as the mass of the object increases • A tractor trailer traveling at 20 mph has more energy than a bicycle traveling at 20 mph

  9. Potential Energy • An object can have energy even though it is not moving • Potential energy is the energy stored in an object because of its position • A kite stuck in a tree has potential energy • A stretched rubber band has potential energy

  10. Potential Energy • What causes the potential energy to increase? • The higher an object is above the ground, the greater its potential energy • The more mass an object has, the greater its potential energy

  11. Potential Energy • Which would have more potential energy? • A lamp or a paperclip on a table? • A bowling ball or a tennis ball at the top of a hill • A rubber band that is stretched 1 inch or 3 inches?

  12. TransformingPotential and Kinetic Energy • Potential energy can be transformed into kinetic energy • Example: a book falls off of a shelf • Kinetic energy can be transformed into potential energy • Example: you throw a ball straight up into the air

  13. Energy Changes in Falling Water • Potential energy is transformed to kinetic energy • The kinetic energy is used to spin a generator that produces electricity

  14. Assignment  • Think about a playground • Where might you find kinetic and potential energy? • Create an illustration of a playground and label all the different places you would see kinetic and potential energy

  15. Assignment Guidelines • Include both kinetic and potential energy • Include at least 5 examples • Label your examples • Color your picture

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