Scientific Method

Scientific Method - IF/THEN(hypothesis/prediction...

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January 10, 2011 Understanding the Nature of Science Hypothesis - A testable statement about the natural world - NOT a guess Fact - An observation that has been repeatedly tested and confirmed - The well tested ideas of science Theory - A well-substantiated explanation of some aspect of the natural world - Can incorporate scientific facts, tested hypotheses, inferences, and laws What is Science? Testable and therefore falsifiable; has conclusions that are tentative pending additional information; self-correcting and accepts possibility of change. Scientific Method: 1) Observations 2) Questions 3) Hypothesis Writing 4) Hypothesis Testing 5) Evaluation of Data 6) Publication of Results Observations- We constantly make observations Questions- We constantly ask questions about our observations Hypothesis- We all use hypotheses in solving everyday problems - Formal, testable statements about our observations
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Unformatted text preview: - IF/THEN (hypothesis/prediction) Hypothesis Testing- An experiment is designed to test hypothesis/prediction and data are collected- Important considerations: • # of Variables • Objectivity • Controls • Sample size (bigger is better) • Defined conditions for repeatability Evaluation of Data - Data are analyzed and evaluated- Hypothesis is either supported or rejected- Hypothesis are supported, NOT proven- May be rejected and tested again Discovery Science- descriptive or observational science- generally not based on hypothesis testing Publication of Results- communication of results to the scientific community Theory- broad concept supported by a large body of evidence- results from the synthesis of many ideas and experiments- more comprehensive and widely accepted...
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