1. The question must be testable and falsifiable:
* Testable: It must be possible to design an experiment or observation that could provide evidence to support or refute the answer.
* Falsifiable: There must be a potential outcome of the experiment or observation that would prove the answer to be wrong. This means the question cannot be based on beliefs, opinions, or values that cannot be tested.
2. The question must be within the realm of the natural world:
* Science investigates the physical universe and its processes. It cannot answer questions about the supernatural, spiritual, or philosophical realms.
3. The question must be clear and specific:
* A vague or ambiguous question will be difficult to investigate and may lead to multiple interpretations. A clear, specific question will allow for focused research and objective answers.
4. There must be available evidence and methods to investigate the question:
* Science relies on data and evidence to build knowledge. If there is no evidence available to support an answer, or if the tools and methods to collect evidence are insufficient, then science cannot answer the question.
Examples:
* Testable and falsifiable: "Does eating more fruits and vegetables lead to a lower risk of heart disease?" This question can be tested through scientific studies and the results could potentially falsify the hypothesis.
* Not testable or falsifiable: "What is the meaning of life?" This question is too philosophical and cannot be tested scientifically.
It is important to note that science is an ongoing process: Answers to scientific questions can evolve as new evidence is gathered and new methods are developed. Science does not provide absolute truths, but rather the best explanations for the natural world based on current knowledge.
