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anything you can change in an experiment that might affect the outcome


a mass hanging from a fixed point that is free to swing to and fro


a motion or activity that repeats itself

controlled experiment

an investigation in which one, and only one, variable is changed in order to see is there is an effect


a basic procedure used in a controlled experiment, before changing any of the variables

two-coordinate graph

a type of graph that shows the outcome of a series of experiments when a variable is changed by steps


the greatest amount of fluid a container can hold

independent variable

the one thing that will change in a controlled experiment

dependent variable

what you find out by doing the experiment (you could also call it the outcome)--it is what you will measure


a set of objects that is working together

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