| Term | Definition |
| Science | the process used to investigate the world. |
| Fact | true statement |
| Hypothesis | an educated guess at what will happen. |
| Qualitative Observations | observations made by the 5 senses. (seeing, feeling, touching, smelling, tasting.) |
| Quantitative Observations | observations made by using measuring instruments. (number-based observations) |
| controlled experiment | An experiment in which only one variable is manipulated at a time |
| Variables | factor that the experimenter changes. |
| Dependent Variable | The factor that may change in response to the manipulated variable, this can also be called the responding variable |
| Control/Constant | standard to compare results. |
| Experimental Group | group that receives the variable or change |
| Control Group | group that receives the control. |
| Models | Used to represent things we cannot directly study. |
| Independent Variable | The one variable that is purposely changed to test a hypothesis This can also be called the manipulated variable |
| Observing | using one or more of your senses to gather information. Your senses include sight, hearing, touch, taste, and smell. |
| inferring, or making an inference | When you explain or interpret the things you observe, you are _________ |
| Predicting | making a forecast of what will happen in the future based on past experience or evidence. |
| Classifying | the process of grouping together items that are alike in some way. |