| A | B | 
|---|
| ____ is a conclusion or understanding that is based on evidence about events that have already occurred or happened. | An inference | 
| A(n) ____ is a clear description of exactly what is observed and nothing more. | Observation | 
| A scientific ____ is a forecast about what may happen in some future situation and is based on facts. | Prediction/hypothesis | 
| A(n) ____ is a fair test that is based on the hypothesis. | experiment | 
| How do we know if a fair test was given? | A fair test is when only one variable is changed. | 
| A ____ is the factor or part in an experiment that is changed. | Manipulated variable (independent variable) | 
| A ____ is the factor or part in an experiment that changes as a result of the manipulated (independent) variable. | Responding variable (dependent variable) |