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15 Cards in this Set

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accuracy
how close measured value is to accepted value
base unit
a defined unit in a system of measurement that is based on an object or event in the physical world
conversion factor
ratio of equivalent values used to express the same quantity in different units
density
the ratio that compares the mass of an object to its volume

g/cm3
derived unit
unit that is defined by a combination of base units
graph
visual display of data
kelvin
SI base unit of temperature

273K-freezing pt
373K-boiling pt
kilogram
SI base unit for mass

approximately 2.2 lbs
liter
metric unit for volume

= to 1 cubic decimeter
1 liter is approx 1 quart
meter
SI unit for length

meter is distance light travels through vacuum in 1/299 792 458 of a sec
percent error
ratio of an error to an accepted value
precison
how close a series of measurements are to one another
scientific notation
expresses numbers as multiples of 2 factors:
a number between 1-10

and ten raised to a power, or exponent
second
SI base unit for time

frequency of microwave radiation given off by a cesium-133 atom is physical standard used to establish
significant figure
all known digits plus 1 estimated digit