Controlled Variables

Controlled Variables

• Change as the values of Dependent Variable change

• Are Kept Constant throughout the experiment

Independent Variables

• Are manipulated to observe their effect on the Dependent Variable

• Remain unchanged during the experiment

Dependent Variables

• Are measured to assess the impact of Independent Variables

• Are controlled to ensure consistency

Controlled Variable

• Are used to eliminate alternative explanations for results

• Are variables that are intentionally changed

A variable that is constant and does not change throughout the experiment is called __________ variable

A plant's growth is affected by temperature, light intensity and carbon dioxide concentration. A student decided to investigate the effect of temperature on plant growth. Which of the following is an example of a controlled variable

• Changing the A/C temperature at different phases of the experiment

• Changing the number of students in the room at different phases of the experiment

• Closing the curtains and making sure that all plants are exposed to identical artificial light throughout the experiment

• Making sure that animals are not harmed during the experiment