Variables in Science

What is the definition of an independent variable?

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

• A variable that is not relevant to the experiment.

• A variable that is determined by chance in an experiment.

• A variable that is manipulated or controlled by the researcher in an experiment.

Tags

NGSS.MS-PS2-2

What is the definition of a dependent variable?

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

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

Tags

NGSS.MS-PS3-4

Which variable is manipulated or changed by the scientist in an experiment?

• constant

• control variable

• independent variable

• dependent variable

Which variable is measured or observed in an experiment?

• control variable

• independent variable

• extraneous variable

• dependent variable

Tags

NGSS.MS-PS1-2

In an experiment to test the effect of sunlight on plant growth, what is the independent variable?

• Sunlight

• Soil

• Temperature

• Water

Tags

NGSS.MS-LS1-5

In an experiment to test the effect of temperature on the rate of chemical reaction, what is the dependent variable?

• concentration

• time

• temperature

• rate of chemical reaction

Tags

NGSS.HS-PS1-5

In an experiment to test the effect of exercise on heart rate, what is the independent variable?

• exercise

• age

• time of day

• heart rate

In an experiment to test the effect of different types of fertilizer on plant growth, what is the dependent variable?

• type of fertilizer

• amount of sunlight

• temperature

• plant growth

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

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

• dependent variable

• y-axis variable

• control variable

• independent variable

Tags

NGSS.MS-PS3-1

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

• dependent variable

• x-axis variable

• control variable

• independent variable

Tags

NGSS.MS-PS3-1