| A | B |
| hypothesis | a testable idea made from a series of observations |
| variable | any factor that influences the experiment |
| constant variable | a factor that is held the same throughout the experiment |
| experiment | a set of procedures desiigned to test a hypothesis |
| independent variable | a variable which the scientist manipulates |
| theory | a hypothesis that has been repeatedly tested and proven to hold true in all circumstances |
| dependent variable | a variable that is measured by the scientist as a result of the independent variable |
| controlled experiment | an experiment in which only one variable is tested at a time |
| observation | information gathered using the 5 senses |
| control group | athe experimental group that does not receive the independent variable |