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15 Cards in this Set
- Front
- Back
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accuracy
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how close measured value is to accepted value
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base unit
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a defined unit in a system of measurement that is based on an object or event in the physical world
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conversion factor
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ratio of equivalent values used to express the same quantity in different units
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density
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the ratio that compares the mass of an object to its volume
g/cm3 |
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derived unit
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unit that is defined by a combination of base units
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graph
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visual display of data
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kelvin
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SI base unit of temperature
273K-freezing pt 373K-boiling pt |
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kilogram
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SI base unit for mass
approximately 2.2 lbs |
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liter
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metric unit for volume
= to 1 cubic decimeter 1 liter is approx 1 quart |
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meter
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SI unit for length
meter is distance light travels through vacuum in 1/299 792 458 of a sec |
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percent error
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ratio of an error to an accepted value
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precison
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how close a series of measurements are to one another
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scientific notation
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expresses numbers as multiples of 2 factors:
a number between 1-10 and ten raised to a power, or exponent |
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second
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SI base unit for time
frequency of microwave radiation given off by a cesium-133 atom is physical standard used to establish |
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significant figure
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all known digits plus 1 estimated digit
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