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19 Cards in this Set
- Front
- Back
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Accuracy
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the closeness of measurements to the correct or accepted value of the quantity measured (44)
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Conversion Factor
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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 (40)
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Density
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the ratio of mass to volume or mass divided by volume (38)
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Derived Unit
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a unit that is a combination of SI base units (36)
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Direct Proportion
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two quantities that give a constant value when one is divided by the other (55)
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Hypothesis
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a testable statement (30)
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Inverse Proportion
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two quantities that have a constant mathematical product (56)
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Model
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an explanation of how phenomena occur and how data or events are related (31)
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Percent Error
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a value calculated by subtracting the experimental value from the accepted value, dividing the difference by the accepted value, and then multiplying by 100 (45)
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Precision
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the closeness of a set of measurements of the same quantity made in the same way (44)
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Quantity
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something that has magnitude, size, or amount (33)
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Scientific Method
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a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data (29)
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Scientific Notation
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numbers written in the form M ×10n where the factor M is a number greater than or equal to 1 but less than 10 and n is a whole number (50)
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SI
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(Le Système International d’Unités) the measurement system accepted worldwide (33)
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Significant Figure
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any digit in a measurement that is known with certainty plus one final digit, which is somewhat uncertain or is estimated (46)
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System
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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 (29)
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Theory
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a broad generalization that explains a body of facts or phenomena (31)
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Volume
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the amount of space occupied by an object (37)
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Weight
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a measure of the gravitational pull on matter (35)
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