Matching Pairs Nature of Science - Unit 1Online version Unit 1 Vocabulary Review by Hannah Bonville 1 Constant 2 Control group 3 Dependent variable 4 x-axis 5 y-axis 6 Independent variable 7 Hypothesis The thing we change on purpose In an experiment, it gets no treatment (it's the "normal" thing) Up-and-down axis on a graph, where we put the dependent variable The thing we are measuring Side-to-side axis on a graph, where we put the independent variable Something that stays the same throughout the experiment An educated guess, part of the scientific method