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26 Cards in this Set
- Front
- Back
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science
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a system of knowledge about the natural world and the methods used to find that knowledge
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technology
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the use of scientific knowledge to solve practical problems
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chemistry
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the study of the composition, structure, properties, and reactions of matter
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physics
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the study of matter and energy and the interactions between the two through forces and motion
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geology
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the study of the origin, history, and structure of Earth
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astronomy
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the study of the universe beyond Earth
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biology
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the study of life and life processes
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scientific method
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an organized plan used for gathering, organizing, and communicationg information
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observation
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information obtained through the senses
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hypothesis
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a proposed answer to a question
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manipulating variable
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a variable that causes a change in another variable
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responding variable
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a variable that changes in response to a chance in the manipulated variable
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controlled experiment
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an experiment in which only one variable, the manipulated variable, is deliberately changed at a time
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scientific theory
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a well-tested explanation for a set of observations or experimental results
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scientific law
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a statement that summarizes a pattern found in nature
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model
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a representation of an object or event
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scientific notation
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a way of expressing a value as the product of a number between 1 and 10 and a power of 10
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length
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the straight-line distance between two points
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mass
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the amount of matter in an object; a measure of the intertia in an object, which depends on the amount of matter the object contains
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volume
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the amount of space taken up by an object
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density
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the ratio of a material's mass to its volume
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conversion factor
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a ratio of equivalent measurements that is used to convert a quantity from one unit to another
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precision
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a gauge of how exact a measurement is
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significant figures
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all the digits in a measurement that are directly measured, plus the last digit, which is estimated
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accuracy
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the closeness of a measurement to the true value of what is measured
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thermometer
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an instrument that measures temperature
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