A proven fact

A testable prediction

An established theory

A conclusion drawn from data

Correct! Wrong!

A hypothesis is an educated guess about how things work, based on observations, and can be tested through experiments.

The variable that is measured or observed

The variable that is kept constant

The variable that is changed or manipulated

The variable that is not important

Correct! Wrong!

The independent variable is the factor that the experimenter changes to test its effects on the dependent variable.

The variable that is manipulated

The outcome that is measured

The variable kept constant

The factor that is observed

Correct! Wrong!

The dependent variable depends on the independent variable and is what is measured to observe the effects of the experiment.

To introduce new variables for comparison

To ensure that the experiment has no independent variable

To provide a baseline for comparison with the experimental group

To make the experiment more complex

Correct! Wrong!

The control group serves as a standard to compare results from the experimental group, helping isolate the effect of the independent variable.