control variable - what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome.
1. Ask a question 2. Form a hypothisis 3. Expirement 4. Record data 5. Conclusion
dependent variable - a variable whose value depends on another. example- A study finds that reading levels are affected by whether a person is born in the U.S. or in a foreign country. The independent variable is where the person was born and the Dependent variable is their reading level.
Independent variable - a variable that does not depend on another Example - If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life, The independent variable is the amount of vitamin that is given to the patients.