| A | B |
| Accuracy | Refers to the closeness of measurements to the correct or accepted value |
| Conversion Factor | A ratio derived from the equality between two different units that can be used to convert form one unit to another. |
| Density | The ratio of mass to volume |
| Derived Unit | Combination of SI units form these |
| Direct Proportion | the relation between quantities whose ratio remains constant, when A changes then B changes by the same factor; also called direct ratio |
| Hypothesis | A testable statement |
| Inverse Proportion | opposite in size, degree, or rate of development |
| Model | In science is more than a a physical object it is often an explanation of how phenomena occur and how data or events are related |
| Percent Error | The accuracy of an individuate measurement compared to the accepted value |
| Precision | The closeness of a set of measurement to each other |
| Quantity | Is something that has magnitude , size or amount |
| Scientific Method | A logical approach to solving problems by observing and collecting data formulating hypotheses, testing hypotheses, and formulating theories based on data |
| Scientific Notation | Numbers are written in the form of M* 10n or M E n where the factor M is a number greater than or equal to 1 but less than 10 |
| SI | A single international system of measurements |
| Significant Figure | In a measurement consists of all the digits known with certainty and one digit which is uncertain or estimated |
| System | A specific portion of matter in a given region of space that has been selected for study during an experiment or observation |
| Theory | A broad generalization that explains a body of facts or phenomena |
| Volume | The amount of space occupied by an object |
| Weight | A measure of the gravitational pull on matter |