Energy

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  • Energy
    • There are 9 forms of energy
      • Light Form - Light energy is the only form of energy that we can see directly. It is formed through chemical, radiation and mechanical means.
      • Heat Form - the total kinetic energy of particles in  a substance
      • Nuclear form - The energy released during nuclear fission or fusion, especially when used to generate electricity.
      • Elastic / strain form - the energy stored in a stretched object
      • Chemical Form - the energy stored in the bonds of a chemical substance.
      • Kinetic Form - the energy an object has due to its motion
      • Sound Form -  is a form of energy that is associated with vibrations of matter. It is a type of mechanical wave which means it requires an object to travel through. This object includes air and water. Sound originates from the vibrations that result after an object applies a force to another object. -
      • Electric Form - the energy transferred by an electric current
      • Gravitational Potential Energy (GPD) - the energy an object has due to its position in a gravitational field
    • Renewable Energy - energy from a source that is not depleted when used, these range from wind and solar power to geothermal heat and hydro-electricity
      • e.g.  Geothermal Heat:  During the heating cycle, a WaterFurnace geothermal heat pump uses the earth loop to extract heat from the ground. As the system pulls heat from the loop it distributes warm air. The same heat energy can be used for a radiant floor system or domesti hot water heating.
        • Advantages
          • Does not produce greenhouse gases (they are harmful to the earth's atmophere)
          • renewable
    • Non Renewable Energy - energy froma source that is depleted when used, these are usually fossil fuels like crude oil and coal (but not necassarily).
      • e.g.  Oil / Crude Oil:  Oil is widely used in industry and transport, it is a carbon-based liquid formed from fossilised animals. Lakes of oil are sandwiched between seams of rock in the earth. Pipes are sunk down to the reservoirs to pump the oil out.
        • Advantages
          • Oil is a ready made fuel.
          • Relatively cheap to extract and covert into energy.
        • Disadvantage
          • When burned, it gives off atmospheric pollutants, including greenhouse gases.
          • Non-renewable /  only a limited supply.
    • Energy cannot be created nor destroyed, it can only be transferred from one form to another.
  • Disadvantage
    • It can run out of steam
    • It is very expensive
    • Most parts of the world do not have suitable areas where geothermal energy can be exploited
    • e.g.  Geothermal Heat:  During the heating cycle, a WaterFurnace geothermal heat pump uses the earth loop to extract heat from the ground. As the system pulls heat from the loop it distributes warm air. The same heat energy can be used for a radiant floor system or domesti hot water heating.
      • Advantages
        • Does not produce greenhouse gases (they are harmful to the earth's atmophere)
        • renewable
  • Non-renewable /  only a limited supply.
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