| A | B |
|---|
| system | group of parts working together |
| linear graph | points fall in a straight line |
| nonlinear graph | poins do not fall in a straight line |
| horizontal axis | runs left to right |
| estimate | scientists use when exact numbers are not known |
| meter | basic unit of length in metric system |
| metric system | based on the number 10 |
| median | middle number in a set |
| weight | measures gravity on an objec |
| kilogram | SI unit of mass |
| kilometer | 1,000 meters |
| volume | amount of space an object takes up |
| Density | mass divided by volume |
| Accuracy | how close to true value |
| Kelvin | SI unit of temperature |
| lab safety | always follow directions |
| Significant figures | measured exactly, plus 1 digit whose value has been estimated |
| volume | length x width x height |
| line graph | how responding variable changes in response to manipulted variable |
