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7th Grade Chapter 4 Lesson 5 Slideshare
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7th Grade Chapter 4 Lesson 5 Slideshare

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7th Grade Chapter 4 Lesson 5 Slideshare 7th Grade Chapter 4 Lesson 5 Slideshare Presentation Transcript

  • Pgs. 145-151 For Student Use Only
  • Energy and Work are the same. -Energy is the ability to do work - Work is a force applied to an object (a push or pull)
  • Potential and Kinetic Energy are different. -Potential Energy is stored energy. - Kinetic Energy is energy in motion.
  • Can energy change from one form to another? -Kinetic- energy in motion -Potential- stored energy -Radiant- energy in the form of electromagnetic waves
  • What is the law of conservation of matter and energy?
    • - Energy (and matter) are transferred from one object or state to another.
    • - Energy and Matter are not changed by natural forces.
  • What is the first law of thermodynamics?
    • All of the above
    • None of the above
    • Matter is not created or destroyed
    • The total amount of matter and energy in the universe is constant
    • For every action there is an equal and opposite reaction
  • How does an object gain energy?
    • Note-
    • -An object in rest will stay at rest until a force moves it.
    • An object in motion will stay in motion until force is acted upon it.
    • You must do work in order to gain energy.
  • What is the transfer of energy?
    • For Example:
    • When a basketball is bounced energy can also be transferred into sound, heat, ground waves.
    • What are the three types of heat transfer?
      • Conduction, Convection, and Radiation.
    • Why is energy never lost?
      • All energy is transferred from one to another.
    NOTE: