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Energy Laws & Types
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Energy: the ability to do work or cause change
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Energy is always involved when physical or chemical changes occur in matter
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You can detect the effects of energy when matter is moved, when it reacts, or when energy is transformed from one form to another form
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Law of Conservation of Energy: Energy cannot be created or destroyed, it can only change from one form to another
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2 Main Types of Energy: Potential or Kinetic
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Potential energy is stored energy that has not been used.
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Examples Potential Energy
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Batteries Potential energy
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Food
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Gasoline (fuel)
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Pulled back Bow and Arrow
A stretched back arrow has potential energy
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Rollercoaster at top of hill
Potential energy at top of coaster.
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Do you have more examples of potential energy?
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An object has potential energy because of its position, shape, or chemistry
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An object’s potential energy is increasing as it gets higher
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The more mass an object has the more potential energy it has
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Kinetic energy is energy of motion.
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Examples Kinetic Energy
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Swinging a Hammer
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Throwing a Ball
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Running
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Weather
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Bowling Kinetic energy of ball is transferred to pins
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Do you have more examples of kinetic energy?
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The amount of kinetic energy an object has depends on its mass and speed
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The faster the object goes, the more kinetic energy the object has
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An object with a larger mass will have more kinetic energy than a smaller object at the same height
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As the potential energy increases, the kinetic energy decreases
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As the potential energy decreases, the kinetic energy increases
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Examples both Potential and Kinetic energy
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Pendulum Wrecking ball has potential energy. Hand has kinetic energy
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Trampoline Potential energy when you are at top of bounce. Potential energy when trampoline is stretched down towards ground.
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Avalanche
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Waterfall
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Energy Skate Park
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What is the relationship of potential and kinetic energy?
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Potential and kinetic energy are inversely proportional
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