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20 Cards in this Set
- Front
- Back
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Accuracy |
Refers to the closeness of measurements to the correct or actual value of the quantity measured. |
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Density |
The ratio of mass to volume, or mass divided by volume m/v. |
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Dimensional Analysis |
A mathematical technique that allows you to use units to solve problems involving measurements. |
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Hypothesis |
A testable statement. |
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Model |
In science it is more than a physical object; it is often an explanation of how phenomena occurred and how data or events are related. |
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Precision |
Refers to the closeness of a set of measurements of the same quantity made in the same way. |
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Scientific Method |
A logical approach to problem solving by observing and collecting data, formulating hypothesis, and formulating theories that are supported by data. |
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SI |
Le Systeme International d'Unites; the single measurement system that scientists all over the world have agreed upon. |
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System |
A specific portion of matter in a given region of space that has been selected for study during an experiment or observation. |
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Volume |
The amount of space occupied by an object. |
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Conversion Factor |
A ratio derived from the equality between two different units that can be used to convert from one unit to the other. |
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Directly Proportional |
When dividing one value by another gives a constant value. |
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Percentage Error |
A calculated value by subtracting the accepted value from the experimental value, dividing the difference by the accepted value and multiplying by 100. |
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Scientific Notation |
Numbers are written in the form M x 10n, where the factor "M" is a number greater than or equal to 1 but less than 10 and "n" is a whole number. |
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Theory |
A broad generalization that explains a body of facts or phenomena. |
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Derived Units |
A combination of SI units. |
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Quantity |
Something that has magnitude, size, or amount. |
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Weight |
A measure of gravitational pull on matter. |
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Inversely Proportional |
When multiplying one value by another gives a constant value. |
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Significant Figures |
A measurement consisting of all the digits known with certainty plus one final digit, which is somewhat uncertain or is estimated. |
