Variables

Front

What is a dependent variable in an experiment?

Back

The dependent variable is the effect or outcome that is measured in an experiment, which is influenced by changes in the independent variable.

Front

What is an independent variable in an experiment?

Back

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

Front

What is the purpose of controlling variables in an experiment?

Back

Controlling variables ensures that only the independent variable is affecting the dependent variable, allowing for a clearer understanding of the relationship between them.

Front

In the experiment 'Does eating breakfast improve test scores?', what is the dependent variable?

Back

The grade you got on the test.

Front

In the experiment 'Which type of medium is best for plant growth?', what is the independent variable?

Back

The type of medium (soil vs. sand).

Front

What is the definition of an experimental variable?

Back

An experimental variable is any factor that can be changed in an experiment, including independent, dependent, and controlled variables.

Front

What is the difference between qualitative and quantitative variables?

Back

Qualitative variables describe characteristics or qualities (e.g., color, type), while quantitative variables represent numerical values (e.g., height, weight).

Front

What is an example of a controlled variable in an experiment?

Back

A controlled variable could be the amount of sunlight each plant receives in a plant growth experiment.

Front

What is the role of the hypothesis in an experiment?

Back

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

Front

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

Back

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