Variables in an Experiment

Front

What is a variable in an experiment?

Back

A variable is any factor, trait, or condition that can exist in differing amounts or types in an experiment.

Front

How many variables should be tested at one time in a controlled experiment?

Back

Only one variable should be tested at a time to ensure accurate results.

Front

What is an independent variable?

Back

The independent variable is the factor that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

In Allison's experiment, what is the independent variable?

Back

The length of the string of the pendulum.

Front

In Randell's experiment, what is the independent variable?

Back

The amount of salt in the water.

Front

In Justin's experiment, what is the dependent variable?

Back

The height of the grass.

Front

What is the purpose of a control group in an experiment?

Back

A control group is used as a standard for comparison to see how the independent variable affects the dependent variable.

Front

Why is it important to have a hypothesis in an experiment?

Back

A hypothesis provides a testable prediction about the relationship between the independent and dependent variables.

Front

What is the role of constants in an experiment?

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Constants are factors that are kept the same throughout the experiment to ensure that the results are due to the independent variable.