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Energy revision - Coggle Diagram
Energy revision
Energy
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the capacity to do work; energy comes in different forms (light, heat, electricity) and can be transferred from one object to another or transformed from one type to another, but never created nor destroyed
Energy transfer
the movement of energy from one object to another, possibly undergoing a transformation at the same time
Efficiency
a measure of how much of the total energy supplied to a device is used, rather than wasted; efficiency = (useful energy) / (total energy input)
Energy consumption
the amount of energy a device or process uses in a certain period of time, measured in watts
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Atom
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a group of atoms held together by bonds, e.g. a water (H2O) molecule
Sankey Diagram
a diagram that shows how energy is transferred and/or transformed by a process or device; each type of energy involved is represented as an arrow; the thickness of each arrow indicates the amount of energy of that type; the combined thickness of the "input" arrows must equal the combined thickness of the "output" arrows because of the law of conservation of energy