have you seen an energy transfer / transformation today?
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Have you seen an energy transfer / transformation today?. Emily P. December 16, 2011. Introduction. Energy is the ability to cause changes in matter Energy can transform or change from one form to another Energy transfers are taking place all around you - PowerPoint PPT PresentationTRANSCRIPT
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Have you seen an energy transfer/
transformation today?
Emily P.December 16, 2011
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IntroductionEnergy is the ability to cause changes in matterEnergy can transform or change from one form to
anotherEnergy transfers are taking place all around youLets learn about the different types of energy so
we can spot the energy that is being transferred
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Types of EnergyPotential energy
Energy of an object because of a positionKinetic energy
Energy of an object because of motion
Mechanical energyTotal energy because of it’s position and motion
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Transfers of EnergyEnergy can change from one form to another but
is never used up
Lets look at some examples of how energy can change form…
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Potential to Kinetic Energy TransferJumping off a cliff changes the potential energy of
standing on a cliff into the kinetic energy of falling
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Chemical to Kinetic Energy TransferBiking converts the chemical energy from food
that we eat into kinetic energy of moving on a bike
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Electrical to Chemical Energy Transfer
A battery charger uses electricity to store chemical energy inside a battery that can be used later when we need it
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Electrical to Light Energy TransferA lamp uses electrical energy to power a light bulb
that produces light
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Electrical to Sound Energy TransferA cell phone uses electricity to generate sound
energy so that we can hear people talking to us
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Electrical to Sound Energy TransferA door bell uses electrical energy to vibrate a bell
so that you can hear a sound
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Chemical to Kinetic to Sound Energy Transfer
You use chemical energy in the food to move your arms and knock on the door. This creates vibrations in the door which you can hear which is sound energy
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Chemical to Thermal Energy TransferA stove transfers the chemical energy in gas into
thermal energy used to heat things on the stove
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Electrical to Thermal Energy TransferAn air conditioner uses electrical energy to cool
the air in our houses
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Chemical to electrical to Light Energy Transfer
A flashlight uses the chemical energy in the battery to generate electricity which powers the light bulb in the flash light
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Light to Kinetic Energy Transfer
A solar car uses light energy to move the car
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Chemical to Electrical to Light Energy Transfer
A car battery has chemical energy which the car uses to generate electrical energy which in turn powers the lights
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ConclusionEnergy can never be destroyedEnergy is being transferred between potential and
kinetic energy all around usWe use energy transfers every day to make our
lives more comfortable!