Science 8--Nature of Science—Scientific Problem Solving

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Presentation transcript:

Science 8--Nature of Science—Scientific Problem Solving Section 3 Vocabulary Case Study

controlled experiment a scientific investigation that tests how one factor affects another

variable any factor that can have more than one value

independent variable the factor that you want to test

dependent variable the factor you observe or measure during an experiment

constants the factors in an experiment that do not change

experimental group used to study how a change in the independent variable changes the dependent variable

control group contains the same factors as the experimental group, but the independent variable is not changed

qualitative data uses words to describe what is observed

quantitative data uses numbers to describe what is observed

scientific method a process of critical thinking that uses observations and experiments to investigate testable predictions about the physical universe