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19 Cards in this Set
- Front
- Back
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bias
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occurs when ascientist's expectations change how the results of an ezperiment are viewed
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constant
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in an experiment, a variable that does not change when other variables change
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control
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standard used for comparison of test results when other variables change
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density
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mass per unit volume of a material
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dependant variable
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factor that changes as a reslut of changes in the other variables
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experiment
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organized procedure for testing a hypothesis; tests the effects of one thing on another under controlled conditions
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graph
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visual display of information or data that can provide a quick way to communicate alot of information and allow scientists to observe patterns
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hypothesis
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educated guess using what you know and what you observe
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independant variable
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factor that, as it changes, affects the measure of another variable
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mass
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amount of matter in an object
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model
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can be used to represent an idea, object, or event that is too big, too complex, or too dangerous to observe or test directly
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scientific law
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statement about what happens in nature that seems to be true all the time;does not ezplain why or how something happens
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scientific method
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organized set of investigation procedures that can include stating a problem, forming a hypothesis, researching and gathering information, testing a hypothesis, analyzing data, and drawing conclusions
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SI
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Internation System of Units- the improved, universally accepted version of the metric system that is based on the multyples of ten and includes the meter(m), liter(L), and kilogram(kg)
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standard
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exact, agrred-upon quantity used of comparison
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technology
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application of science to help people
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theory
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explanantion of things of events that is based on knowledge gained form many observations and investigations
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variable
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factor that can cause a change in the results of an experiment
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volume
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amount of space occupied by an object
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