energy power-point. energy the ability of a system to perform work. it can be transferred and...
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Energy Power-point
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Energy• The ability of a system to perform work. It can be transferred
and converted, but not created or destroyed.
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Types of EnergyA) Potential: Stored energyB) Kinetic: Energy of movement. How much kinetic energy a
body has depends on its speed and mass.
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Energy Forms (MR. CHEN)Energy Types Kinetic Potential Definition Example
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Gravitational Potential Energy• The energy a body has because it is near something with
mass. The amount of energy is related to an objects height.
Gravitational Energy = Weight X Height
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Mechanical Energy (Kinetic)
• The energy due to motion.
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Elastic Potential Energy• Energy stored when something is stretched or compressed.
This is present in a pulled rubber band, or a squashed spring.
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Chemical Energy (Potential)• Energy a body has because of what it is made. The energy is
stored in the chemical bonds of molecules. This is present in an electrical cell, explosives, food and oil.
• Examples: Respiration: C6H12O6+ 6O2----------> 6H2O + 6CO2
(Happens in Mitochondria)Photosynthesis: 6H2O + 6CO2 ----------> C6H12O6+ 6O2
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Nuclear Energy (Potential):• Energy stored in the nucleus of atoms that can be released
during fission, fusion or radioactive decay.
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Heat or Thermal Energy (Kinetic)
• Energy from the movement of atoms. Energy is transferred from hot regions, to cool regions because of the temperature difference between them.
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Electrical Energy (Kinetic)• This is really just the kinetic energy of moving charges
(electrons) in an electrical circuit.
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Electromagnetic Radiation (Kinetic)
• Energy is carried by electromagnetic radiation, such as light or gamma rays.
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Law of Conservation of Energy
• Energy cannot be created or destroyed.
http://phschool.com/webcodes10/index.cfm?wcprefix=cgp&wcsuffix=3053&area=view&x=17&y=13