Independent and Dependent Variables

Front

What is an independent variable?

Back

An independent variable is the variable that is manipulated or changed in an experiment to observe its effect on the dependent variable.

Front

What is a dependent variable?

Back

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

Front

In an experiment, if the amount of sunlight is changed to see its effect on plant growth, what is the independent variable?

Back

The amount of sunlight.

Front

In an experiment, if the growth of plants is measured after changing the amount of water they receive, what is the dependent variable?

Back

The growth of the plants.

Front

What is a control variable?

Back

A control variable is a variable that is kept constant throughout an experiment to ensure that the results are due to the independent variable.

Front

Why is it important to identify independent and dependent variables in an experiment?

Back

Identifying these variables helps to clarify the relationship being tested and ensures that the experiment is structured correctly.

Front

If a scientist is testing how different fertilizers affect plant growth, what could be a control variable?

Back

The type of plant used in the experiment.

Front

In Sarah's birthday treat example, what is the dependent variable?

Back

The number of treats (t).

Front

What is the relationship between independent and dependent variables?

Back

The independent variable is manipulated to observe its effect on the dependent variable.

Front

How can you identify the independent variable in a given scenario?

Back

Look for the variable that is being changed or controlled in the experiment.