Lesson 4.10 Independent and Dependent Variables

Front

What is an independent variable?

Back

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

Front

What is a dependent variable?

Back

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

Front

In an experiment, how do you identify the independent variable?

Back

The independent variable is identified as the one that is manipulated or changed by the experimenter.

Front

In an experiment, how do you identify the dependent variable?

Back

The dependent variable is identified as the outcome that is measured in response to changes in the independent variable.

Front

What is the purpose of controlling variables in an experiment?

Back

Controlling variables ensures that the experiment is fair and that the results are due to the manipulation of the independent variable.

Front

Example of an independent variable in a study about plant growth:

Back

The type of fertilizer used.

Front

Example of a dependent variable in a study about plant growth:

Back

The height of the plants after a certain period.

Front

What is a hypothesis in the context of an experiment?

Back

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

Front

Why is it important to have a control group in an experiment?

Back

A control group provides a baseline for comparison, helping to determine the effect of the independent variable.

Front

What does it mean to have a positive correlation between two variables?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.