| Term | Definition |
|---|---|
| Metric System | a measurement system based on the number 10 |
| International System of Units (SI) | a version of the metric system |
| Mass | a measurement of the amount of matter in an object |
| Weight | a measure of the force of gravity acting on an object |
| Volume | the amount of space an object or substance takes up |
| Density | a measure of how much mass is contained in a given volume |
| Estimate | an approximation of a number based on reasonable assumptions |
| Accuracy | refers to how close a measurement is to the true or accepted value |
| Precision | refers to how close a group of measurements are to each other |
| Significant Figures | communicate how precise measurements are |
| Percent Error | calculations that are ways to determine how accurate an experimental value is |
| Mean | the average of a set of data |
| Median | the middle number in a set of data |
| Mode | the most common number in a set of data |
| Range | the difference between the greatest value and the least value in a set of data |
| Anomalous Data | data that does not fit with the rest of a data set |
| Graph | a picture of your data that allows you to visually analyze and compare imformation |
| Linear Graph | a line graph in which the data points form a straight line |
| Nonlinear Graph | a line graph in which the data points do not form a straight line |
| Model | a representation of a simple or complex object or process |
| System | a group of parts that work together to perform a function or produce a result |
| Input | the material or energy that goes into a system |
| Output | the material or energy that comes out of a system |
| Process | what happens in a system |
| Feedback | output that changes the system in some way |
| Safety Symbol | signs the alert you to possible sources of accidents in a laboratory |
| Field | any area outside of a science laboratory |
