| A | B |
|---|
| observation | the use of human senses to gather information |
| hypothesis | a testable prediction; affected by experience and prior knowledge |
| control | a group or population which is used for comparison purposes in an experiment; makes results valid |
| constant | a factor that doesn't change in an experiment; makes results reliable |
| independent variable | the factor adjusted by the experimenter based on need and resources |
| dependent variable | the factor being tested in an experiment |
| accuracy | refers to how close a measurement is to the true value; related to skill |
| precision | refers to how close together repeated measurements are, regardless of accuracy; related to calibration |
| meter | SI standard unit for length; measured using meterstick |
| liter | SI standard unit for capacity; measured using graduated cylinder |
| kilogram | SI standard unit for mass; measured using triple beam balance |
| second | SI standard unit for time; measured using stopwatch |
| Kelvin | SI standard unit for temperature; measured using a thermometer |
| control variable | another name for a constant |
| experimental variable | another name for the dependent variable in an experiment |
