All about energy!

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