Independent and Dependent Variables Quiz

Which of the following best describes a dependent variable?

• It is the variable that is changed or controlled in a scientific experiment.

• It is the variable that is measured and affected in an experiment.

• It is the variable that remains constant throughout the experiment.

• It is the variable that is not related to the experiment.

In a study examining the effect of temperature on the solubility of a substance, what is the dependent variable?

• The type of substance

• The temperature

• The solubility of the substance

• The container used

Tags

NGSS.MS-PS1-4

In an experiment to determine the effect of different fertilizers on plant height, what is the dependent variable?

• The type of fertilizer

• The height of the plant

• The type of plant

• The amount of sunlight

Tags

NGSS.MS-LS2-1

Which of the following is an example of an independent variable in an experiment?

• The amount of sunlight a plant receives

• The growth rate of a plant

• The color of the plant's leaves

• The type of soil used

A scientist wants to test the effect of pH on enzyme activity. What should be the independent variable in this experiment?

• The concentration of the enzyme

• The pH level

• The temperature

• The enzyme activity

Tags

NGSS.MS-PS1-2

In a study to determine how the number of study hours affects test scores, what is the dependent variable?

• The number of study hours

• The test scores

• The subject of the test

• The time of day the test is taken

A researcher is studying the effect of different types of music on concentration levels. What is the independent variable?

• The concentration levels

• The type of music

• The volume of the music

• The duration of the study

A student is designing an experiment to test how different amounts of fertilizer affect plant growth. What should the student do to ensure the results are valid?

• Use different types of plants for each test

• Keep the amount of water and sunlight constant for all plants

• Change the type of soil for each plant

• Measure the plant growth at different times of the day

Tags

NGSS.MS-ETS1-1

NGSS.MS-LS1-5

Which of the following scenarios best illustrates the concept of a controlled variable?

• Changing the temperature to see its effect on solubility

• Keeping the amount of light constant while testing different fertilizers

• Measuring the growth of plants with different amounts of water

• Observing the color change in leaves with varying soil types

If you are testing how the amount of water affects plant growth, what is the independent variable?

• The type of plant

• The amount of water

• The growth of the plant

• The type of soil

Tags

NGSS.MS-LS2-1