7th Grade Variables Quiz

What is an independent variable?

• An independent variable is a variable that is manipulated or controlled by the experimenter.

• An independent variable is a variable that is not affected by other variables.

• An independent variable is a variable that is measured in an experiment.

• An independent variable is a variable that is randomly selected.

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In an experiment, which variable is manipulated or changed by the researcher?

• The dependent variable is manipulated or changed by the researcher.

• The extraneous variable is manipulated or changed by the researcher.

• The independent variable is manipulated or changed by the researcher.

• The control variable is manipulated or changed by the researcher.

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What is a dependent variable?

• A dependent variable is the variable that is manipulated in an experiment or study.

• A dependent variable is the variable that is not relevant to the experiment or study.

• A dependent variable is the variable being measured or observed in an experiment or study.

• A dependent variable is the variable that remains constant in an experiment or study.

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In an experiment, which variable is measured or observed to determine the effect of the independent variable?

• independent variable

• dependent variable

• control variable

• extraneous variable

Which variable is plotted on the x-axis of a graph?

• control variable

• independent variable

• y-axis variable

• dependent variable

Which variable is plotted on the y-axis of a graph?

• dependent variable

• control variable

• x-axis variable

• independent variable

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What is the purpose of control variables in an experiment?

• Control variables in an experiment are used to introduce bias into the results.

• The purpose of control variables in an experiment is to minimize the impact of confounding factors and isolate the independent variable being tested.

• Control variables in an experiment are used to manipulate the dependent variable.

• Control variables in an experiment have no purpose.

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Give an example of an independent variable in an experiment about plant growth.

• Amount of water or sunlight

• Type of soil used

• Color of the plant

• Time of day the plant is watered

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Give an example of a dependent variable in an experiment about plant growth.

• type of soil used

• number of leaves on the plants

• height of the plants

• color of the plants

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What are some common control variables in an experiment about plant growth?

• Brand of the fertilizer used

• Number of leaves on the plant at the start of the experiment

• Color of the plant pots

• Temperature, light intensity, humidity, soil type, and amount of water given to the plants.

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