| A | B |
| scientific inquiry | the diverse ways in which scientists study the natural world and propose explanations |
| variables | factors that can change in an experiment, must be the same |
| independent variable | the one variable that is purposely changed to test a hypothesis |
| dependent variable | the factor that may change in response to the indepenent variable |
| controlled experiment | an experiment in which only one variable is changed at a time |
| data | facts, figures, and other evidence gathered through qualitative and quantitative observations |
| scientific theory | a well-tested and widely accepted explanation of observations and experimental results |
| scientific law | a statement that describes what scientists expect to happen every time under a particular set of conditions |
| hypothesis | a possible answer to a scientific question |