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| the rate of doing work or converting energy |
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Power = Work or energy / time Watts = Joules / seconds Power = m*g*h / time |
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energy an object has due to its motion or position kinetic energy, potential energy, work, stretched rubber band |
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electromagnetic energy light, UV light, x-rays, infrared radiation, radio waves, microwaves |
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carried by the flow of electric current batteries, electrical wall outlets |
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stored in the bonds between atoms gasoline, food |
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results from splitting up large atoms, or from combining small atoms splitting uranium combining hydrogen |
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heat energy released from burning |
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a form of energy in a fluid blowing up a balloon |
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| a system that only counts some forms of energy, or allows energy to come into or go out of a system |
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| a system in which all forms of energy and matter are counted and none is allowed to enter or leave the system |
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| shows the energy conversions that occur in a system |
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| a unit of power that is equal to 746 watts |
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the ratio of output energy or power divided by input energy or power the efficiency of a process describes how well energy or power is converted from one form to another all of the efficienies in a system add up to 100% |
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| first law of thermodynamics |
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Law of Conservation of Energy: energy cannot be created or destroyed, only changed from one form to another |
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| second law of thermodynamics |
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| when work is done by heat flowing, the output work is always less than the amount of heat that flows |
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| how efficient is using gasoline in your car |
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Definition
overall, only 36% almost 64% flows out of the car's tailpipe and radiator as waste heat |
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| the energy in foods measured in kilocalories |
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| how many joules are in 1 Calorie |
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| is the energy efficiency of living things high or low |
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quite low most of the energy in food becomes heat, very little becomes physical work |
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| a process in plants that takes input energy from the sun and creates sugar (a form of chemical energy) |
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| changing the form of energy from one type to another |
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| a balance between energy in and energy out so the total energy remains the same |
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the energy flow cycle which describes the phases that water takes energy in is solar energy and energy out is heat energy (air, wind, and weather) causing condensation to precipitation to ground water and rivers to evaporation to condensation, etc. |
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| a way of describing the energy flow between living things |
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| a plant or one-celled organism that converts energy from the sun into chemical energy in molecules, like sugar |
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| gets energy from eating plants |
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| gets energy from eating herbivores and other carnivores |
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| break down wastes and bodies of other animals into simple molecules that can be used by plants |
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| gets energy from eating both plants and animals |
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the energy used to move something the product of applying a force over a distance |
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| force * distance = Newtons |
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