All about energy!


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All about energy!

  1. 1. All About Energy!<br />Our Focus: Why is energy so important in our lives?<br />
  2. 2. First Things First<br /><ul><li>Let’s brainstorm!
  3. 3. What is energy?
  4. 4. Jot your ideas down</li></li></ul><li>Some Forms of Energy<br /><ul><li>Mechanical (2 types: Potential and kinetic)
  5. 5. Heat energy
  6. 6. Light energy
  7. 7. Electricity
  8. 8. Sound energy</li></li></ul><li>Mechanical Energy<br /><ul><li>2 types: Potential and kinetic
  9. 9. Mechanical energy is the energy of motion.
  10. 10. Potential energy is stored energy. Objects with potential energy have the ability to move because of earth’s gravity. Pulls objects toward the ground.
  11. 11. Check point: Do you think an object with potential energy is in motion? Why or why not?</li></li></ul><li><ul><li>Kinetic energy is energy of movement.
  12. 12. Checkpoint: Describe the difference between potential and kinetic energy.</li></li></ul><li>Let’s go for a Ride!<br />In the photo of the rollercoaster below, label each point of potential and kinetic energy.<br />
  13. 13. Heat Energy<br /><ul><li>Where does heat energy come from?
  14. 14. The movement of atoms(tiny particles) within a substance.
  15. 15. Predict!</li></ul>Would fast movement cause an increase or decrease in heat energy? How do you know?<br />
  16. 16. Heat Energy<br /><ul><li>Temperature measures how fast the atoms are moving.
  17. 17. Are temperature and heat the same? Explain.</li></li></ul><li>Movement of Heat Energy<br /><ul><li>Heat energy naturally moves from warmer objects to cooler ones.
  18. 18. When this occurs through direct touching, this is called conduction.
  19. 19. What are some examples of conduction in our daily lives?</li></li></ul><li>Movement of Heat Energy<br /><ul><li>Think about it! Could heat energy transfer from a warmer object to a cooler one without direct contact?
  20. 20. Provide an example to support your answer.</li></li></ul><li>Light Energy<br /><ul><li>Light allows us to see the objects around us.
  21. 21. Light is made up of the colors in the rainbow and travels in the straight lines. Remember ROY G BIV.</li></ul>Red<br />Orange<br />Yellow<br />Green<br />Blue<br />Indigo<br />Violet<br />
  22. 22. Light Energy<br /><ul><li>When you see a color, it is because that color is a reflect from the object you are looking at.
  23. 23. The other colors are absorbed.</li></li></ul><li>Light Energy<br /><ul><li>Something that makes light is called luminous.
  24. 24. Some objects though reflect light rays – the light rays bounce off these objects.
  25. 25. Example: The moon reflects the light rays from the sun.</li></li></ul><li>Light Energy<br /><ul><li>When light reflects off a flat surface, the rays bounce back at the same angle.
  26. 26. Predict: What would happen if the surface was uneven?
  27. 27. Tennis ball example.</li></li></ul><li>Light Energy<br /><ul><li>Light rays bend when they move from one medium to another.
  28. 28. This is called refraction.
  29. 29. Pen in cup of water example.</li></li></ul><li>Electricity<br /><ul><li>Electricity is made of tiny particles that have negative charges.
  30. 30. “opposites attract, likes repel”
  31. 31. The opposites are called positive and negative charges.
  32. 32. Describe what is occurring in the diagram below.</li></li></ul><li>Sound Energy<br /><ul><li>Sound energy is produced when molecules vibrate.
  33. 33. When these vibrations are felt by our eardrums we hear sound.
  34. 34. Sound travels in waves.
  35. 35. Sound travels fastest through solids, then liquids, and the slowest through gases.</li>