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NOS 14
Term | Definition |
---|---|
description | spoken or written summary of observations |
explanation | interpretation of observations |
international system of units | internationally accepted system for measurement |
accuracy | description of how close a measurement is to an accepted or true value |
precision | description of how similar or close measurements are to each other |
significant digits | are the number of digits in a measurement that are known with a certain degree of reliability |
law of conservation of energy nos page 17 through 24 | energy can be transformed from one place to another, but it cannot be created or destroyed |
energy transfer | when energy moves from one object to another without changing form |
energy transformation | when one form of energy is converted to another form of energy |
work | the transfer of energy that occurs when a force makes an object move in the direction of the force work is only being done while the force is acting on the object |
open system | is a system that exchanges matter of energy with the environment |
closed system | is a system that does not exchange matter or energy with the environment |
renewable energy source | is an energy resource that is replaced as fast as or faster than it is used |
nonrenewable energy source | an energy resource that is available in limited amounts or that is used faster than it can be replaced in nature |