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20 Cards in this Set

  • Front
  • Back
Centimeter (cm)
a common metric unit of length
Gram (g)
a common metric unit of mass
Milliliter (mL)
a common metric unit of volume
Mass
the quantity of matter in an object; the measure of the amount of matter it posses. Mass is measured with a balance and is not affected by gravity.
Weight
the force exerted by gravity on an object
Measurement
a numerical value and unit that expresses a physical quantity such as length, mass, or volume
Instrument
a device for recording a measurement such length, mass, or volume
Uncertainty
the degree of inexactness in an instrumental measurement
Significant Digits
the certain digits in a measurement plus one estimated digit
Non-significant Digits
the digits in a measurement that exceed the certainty of the instrument
Rounding Off
the process of eliminating digits that are not significant
Exponent
number written as a superscript that indicates a value is multiplied by itself
Power of 10
a positive or negative exponent of 10
Scientific Notation
a method for expressing numbers by moving the decimal place after the first significant digit and indicating the number of decimal moves by a power of 10
Unit Equation
a statement of two equivalent values; for example,
1 foot = 12 inches
Unit Factor
a ratio of two quantities that are equivalent and can be applied to convert from one unit to another, for example, 1 foot/12 inches
Reciprocal
the relationship of a fraction and its inverse; for example, 1 yard/3 feet and 3 feet/1 yard
Exact Equivalent
a statement of two exactly equal values, for example, 1 yard = 36 inches
Unit Analysis Method
a systematic procedure for solving problems that proceeds from a given value to a related answer by the conversion of units
Percent (%)
an expression for the amount of a single quantity compared to an entire sample