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13 Cards in this Set

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Qualitative Measurements
give results in descriptive, nonnumreical form
Quantitative Measurements
give results in a definite form, usually as numbers and units
Scientific Notation
a number written as the product of two numbers: a coefficient and 10 raised to a power
Accurary
a measure of how close a measurement comes to the actual or true value of whatever is measured
Precision
a measure of how close a series of measurement depends on more than one measurement
Accepted value
the correct value based on reliable references
Experiment Value
the value measured in the lab
Error
the difference between the accepted value and th experimental value
Percent Error
the absolute value of the error divided by the accepted value, multiplied by 100%
Significant Digits
the result of a mathematical operation can never be more precise measurement
International System of Units (SI)
revised version of metric system
Weight
a force that measures the pull on a given mass by gravity
Density
the ratio of the mass of an object to its volume (d=m/v)