Scientific Method #4

What is an independent variable?

• A variable that is randomly assigned to participants.

• A variable that is not affected by other variables.

• A variable that is measured or observed in an experiment.

• A variable that is manipulated or controlled by the experimenter.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is a dependent variable?

• A dependent variable is the outcome or response variable that is affected by the independent variable.

• A dependent variable is the variable that is manipulated by the researcher.

• A dependent variable is the variable that is not measured or observed in an experiment.

• A dependent variable is the variable that has no effect on the independent variable.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is a controlled variable?

• A controlled variable is a variable that is measured in an experiment.

• A controlled variable is a variable that is manipulated in an experiment.

• A controlled variable is a variable that is kept constant or unchanged in an experiment.

• A controlled variable is a variable that is randomly selected in an experiment.

What is a control group?

• A control group is a group in an experiment that does not receive the experimental treatment or intervention.

• A control group is a group in an experiment that receives a higher dose of the experimental treatment or intervention.

• A control group is a group in an experiment that receives a different type of experimental treatment or intervention.

• A control group is a group in an experiment that receives the same treatment or intervention as the experimental group.

Which variable is manipulated or changed by the experimenter?

• independent variable

• control variable

• random variable

• dependent variable

Tags

NGSS.MS-PS2-2

Which variable is measured or observed in an experiment?

• dependent variable

• control variable

• independent variable

• extraneous variable

Tags

NGSS.MS-PS3-4

Which variable is kept constant or unchanged in an experiment?

• dependent variable

• experimental variable

• control variable

• independent variable

Tags

NGSS.MS-PS2-5

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

• The purpose of a control group in an experiment is to ensure biased results.

• The purpose of a control group in an experiment is to waste time and resources.

• The purpose of a control group in an experiment is to confuse the researchers.

• The purpose of a control group in an experiment is to provide a baseline for comparison.

In a scientific experiment, what is the role of the independent variable?

• The role of the independent variable is to be measured by the researcher.

• The role of the independent variable is to be determined by the dependent variable.

• The role of the independent variable is to remain constant throughout the experiment.

• The role of the independent variable is to be manipulated or changed by the researcher.

Why is it important to have controlled variables in an experiment?

• To ensure that observed changes are due to the manipulated variable and not other factors.

• To waste time and resources.

• To confuse the participants.

• To make the experiment more complicated.

Tags

NGSS.MS-PS3-4