Variables in Experiments

What is an independent variable in an experiment?

• The independent variable is the variable that is measured in the experiment.

• The independent variable is the variable that is kept constant in the experiment.

• The independent variable is the variable that is determined by the participants in the experiment.

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

Tags

NGSS.MS-PS2-2

What is a dependent variable in an experiment?

• The dependent variable is the variable being measured or observed.

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

• The dependent variable is the variable that remains constant throughout the experiment.

• The dependent variable is the variable that is not important in the experiment.

Tags

NGSS.MS-PS3-4

How do you identify the independent variable in an experiment?

• The independent variable is the variable that is not important in the experiment.

• The independent variable is the variable that is measured in the experiment.

• The independent variable is the variable that is randomly selected by the researcher.

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

How do you identify the dependent variable in an experiment?

• The dependent variable is the variable being measured or observed.

• The dependent variable is the variable that is not relevant to the experiment.

• The dependent variable is the variable that remains constant in the experiment.

• The dependent variable is the variable that is manipulated in the experiment.

In a study investigating the effect of temperature on plant growth, what is the independent variable?

• plant species

• soil pH

• light intensity

• temperature

Tags

NGSS.MS-LS1-5

In a study investigating the effect of temperature on plant growth, what is the dependent variable?

• temperature

• soil type

• plant growth

• amount of water

Tags

NGSS.MS-LS1-5

In an experiment testing the impact of exercise on heart rate, what is the independent variable?

• heart rate

• independent variable

• experiment

• exercise

In an experiment testing the impact of exercise on heart rate, what is the dependent variable?

• heart rate

• duration of exercise

• body temperature

• blood pressure

What is the role of control variables in an experiment?

• Control variables help minimize the impact of confounding factors and ensure that any observed effects are due to the independent variable being tested.

• Control variables have no impact on the experiment.

• Control variables are used to manipulate the dependent variable.

• Control variables are only used in observational studies.

Tags

NGSS.MS-PS2-2

Why is it important to clearly define the independent and dependent variables in an experiment?

• Clearly defining the independent and dependent variables allows for precise and consistent results.

• Clearly defining the independent and dependent variables is unnecessary and time-consuming.

• Clearly defining the independent and dependent variables leads to biased and unreliable results.

• Clearly defining the independent and dependent variables allows for accurate and reliable results.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4