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| movement; something that happens |
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| a chemical change; a process that changes substances into new substances |
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| electrical power produced by falling water that turns a turbine generator |
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| the ratio of the force produced by a machine to the force applied to it |
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| energy that an object has because of its motion or its position |
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| a simple device without moving parts that changes the magnitude or direction of a force |
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| energy in an object or substance that is not being given off by the object or substance |
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| to take in matter or energy |
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| the ability to do work or cause change; can be changed into different forms and can move between objects |
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| the transfer of energy from one organism to another through a food chain or web; or the transfer of energy from one object to another, such as heat energy |
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| the number of cycles a wave completes in a period of time; the number of times something happens in a period of time |
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| the energy an object has because of its motion |
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| an area of land at a high elevation with a flat surface |
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| to pass a disease; send energy from one place to another; to communicate by sending a message (related word: transmission) |
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