Experimental Variables and Groups

Front

What is the variable in an experiment that is purposely changed by the scientist?

Back

Independent variable

Front

In an experiment on plant growth, what should be kept constant?

Back

Type of plant, flower pot, soil, and amount of sunlight

Front

What is the variable that is measured in an experiment?

Back

Dependent variable

Front

What are controlled variables (constants)?

Back

The things we keep the same for every part of the experiment

Front

Why is more experimental data or observations generally better?

Back

It allows scientists to see patterns more clearly.

Front

What is an independent variable?

Back

The variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

The variable that is measured and affected in the experiment.

Front

What is a control group?

Back

The group in an experiment that does not receive the experimental treatment and is used for comparison.

Front

What is the purpose of controlled variables in an experiment?

Back

To ensure that the experiment is fair and that the results are due to the independent variable.

Front

What is the difference between independent and dependent variables?

Back

Independent variables are manipulated by the researcher, while dependent variables are observed and measured.