I.简介 科学研究的方法 Observation Collection of scientific facts through observation and measurement Hypothesis A tentative,testable statement about the natural world that can be used to build more complex inferences and explanations Testing Development of observations, experiments,and models to test(and,if necessary,revise)the hypothesis after much testing and experimentation ↓ Theory In science,a well-substantiated explanation of some aspect of the natural world that can incorporate facts,laws, logical inferences,and tested hypotheses Figure I-5 The scientific method.科学研究的方法