a set of objects that are working together.
one full rotation of the propeller.
the variable we know before we start the experiment, we control and change the increments in which we test it.
the variable we do not know before we start the experiment. The outcome or result due to the change.
is anything that you can change in an experiment that might affect the outcome.
is an investigation designed to find out how variables affect outcomes.
an experiment in which one, and only one, variable is changed in order to assess its effect. All variables are controlled (kept constant) except one.
the basic procedure used in a controlled experiment, before changing any of the variables.
shows the outcome of a series of experiments when the variable is changed by steps.
Variables that affect plane flight include
mass, number of standard rubber-band winds, slope of the line and length of rubber bands (they wear out).