Friday, December 10, 2010

Feeling.... energetic : D


  1.  Kinetic Energy is energy that is in motion. Moving water and wind are good examples of kinetic energy. Electricity is also kinetic energy because even though you can't see it happen, electricity involves electrons moving in conductors.
  2. Potential Energy is stored energy. Examples of potential energy are oil sitting in a barrel, or water in a lake in the mountains. This energy is referred to as potential energy, because if it were released, it would do a lot of work. Energy can change from one form to another. A good example is a Roller Coaster. When it is on its way up, it is using kinetic energy since the energy is in motion. When it reaches the top it has potential (or stored) energy. When it goes down the hill it is using kinetic energy again.
  3. Mechanical Energy is the energy of motion that does the work. An example of mechanical energy is the wind as it turns a windmill.
  4. Heat energy is energy that is pushed into motion by using heat. An example is a fire in your fireplace.
  5. Chemical Energy is energy caused by chemical reactions. A good example of chemical energy is food when it is cooked.
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  7. Electrical Energy is when electricity creates motion, light or heat. An example of electrical energy is the electric coils on your stove.
  8. Gravitational Energy is motion that is caused by gravity. An example of gravitational energy is water flowing down a waterfall.
  9. Nuclear Energy: Certain elements have potential nuclear energy, such that there are internal forces pent up on their nucleus. When that potential energy is released, the result is kinetic energy in the form of rapidly moving particles, heat and radiation.
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  11. Light is the movement of waves and/or light particles (photons). It is usually formed when atoms gain so much kinetic energy from being heated that they give off radiation. This is often from electrons jumping orbits and emitting moving photons.
  12. Sound Energy: Sound waves are compression waves associated with the potential and kinetic energy of air molecules. When an object moves quickly, for example the head of drum, it compresses the air nearby, giving that air potential energy. That air then expands, transforming the potential energy into kinetic energy (moving air). The moving air then pushes on and compresses other air, and so on down the chain. A nice way to think of sound waves is as "shimmering air".
     
     

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