Final answer:
The term for the variable that a scientist adjusts during an experiment is the Independent variable.
Step-by-step explanation:
The term for a variable that a scientist adjusts during an experiment is the Independent variable. The independent variable is the variable that is deliberately changed or manipulated by the scientist in order to see its effect on the dependent variable. For example, if a scientist is studying the effect of temperature on plant growth, the independent variable would be the temperature levels that the scientist adjusts.
Learn more about Independent variable in scientific experiments