The use of words to describe what is observed in an experiment.

The use of numbers to describe what is observed in an experiment.

An explanation of observations or events that is based on knowledge gained from many observations and investigations

A rule that describes a pattern in nature

The amount of matter in an object

The part of the controlled experiment used to study relationships among variables.

The amount of space something takes up.

The factor that a scientist observed or measures during an experiment.

The factor that is changed by the investigator to observe how it affects a dependent variable

The part of an experiment that contains the same factors as the experimental group, but the independent variable is not changed.

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