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20 Cards in this Set
- Front
- Back
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a logical approach to solving problems by obseriving and collecting data, formulating hypotheses testing hypothesis and formulating theories that are supported
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scientific method
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a specific portion of matter in a given region of space that has been selected for study during an experiment or observation
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system
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testable statement
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hypothesis
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an explanation of how pehoma occur and how data or events are related
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model
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a broad generalization that explains a body of facts or phenoma
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theory
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something that has magnitude, size or amount
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quanity
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le systeme international d unites
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si
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a measure of the gravitational pull on matter
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weight
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combinations of si base units
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derived unit
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amount of space occupied by an object
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volume
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the ratio of mass to volume or mass divided by volume
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density
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a ratio derived from the equality between two different units that can be used to convert from one unit to the other
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conversion factor
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a mathematical technique that allows you to use units to solve prombles involving mesaurements
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dimensional analysis
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refers to the closeness of a set of measurements of the same quanity made in the same way
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precison
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refers to the closeness of emasurements to the correct or acceptable value of the quanity measured
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accuracy
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caculated by subtracting the accepted value from the experiment value
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percentage value
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consist of all the digits known with certainity plus one final digit which is somewhat uncertain or is estimated
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significant figures
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numbers are written in the form Mx 10n
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scientific notation
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dividing one by another gives constant value
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directly proportional
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if the product is constant
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inversely proportional
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