Which of these best describes an experiment?
A. A study that changes one variable and observes the effects on another variable.
B. A study that observes two variables to determine whether they change together.
C. A study that measures a variable at regular intervals over a long period of time.
Answer (2)
An experiment changes one variable and observes the effects on another variable, distinguishing it from observational studies. It involves manipulation of variables and observation of effects, serving as a fundamental method in scientific research. For instance, changing sunlight exposure to study its impact on plant growth exemplifies this process. ;
An experiment best describes changing one variable and observing the effects on another variable. This is fundamental for understanding cause-and-effect relationships in scientific research. Therefore, the correct answer is A.
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