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Scientific Law, Theory, and Evidence

Scientific Law, Theory, and Evidence. Mrs. Crawley Fall 2009. Scientific Law – a phenomenon of nature that has been proven to occur under specific conditions When a hypothesis has been tested over and over again and has not been contradicted Usually simply stated

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Scientific Law, Theory, and Evidence

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  1. Scientific Law, Theory, and Evidence Mrs. Crawley Fall 2009

  2. Scientific Law – a phenomenon of nature that has been proven to occur under specific conditions When a hypothesis has been tested over and over again and has notbeen contradicted • Usually simply stated • Can be stated mathematically Example Newton's 2nd Law: a=f/m Law of Conservation of Mass

  3. Scientific Theory – an explanation or model that accounts for a phenomena Explains why something might have happened Theories are not fixed; they change over time Based on… • Observations, experimentation, and reasoning Example Theory of Natural Selection Plate Tectonic Theory

  4. Scientific Evidence – information that supports or rejects the content of a scientific study Provides proof to accept or reject a tested hypothesis Examples Observations Experimental data Personal experiences

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