Module 1 Scientific Laws Ppt

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Scientific laws

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Module 1 Scientific Laws Ppt

  1. 1. PHYSICAL SCIENCE <ul><li>What is physical science? </li></ul><ul><ul><li>Physical science is an introduction to chemistry and physics </li></ul></ul><ul><li>What does this mean? </li></ul><ul><ul><li>Chemistry is the study of matter and energy </li></ul></ul><ul><ul><li>Physics is the study of the physical world…basically, everything else </li></ul></ul><ul><li>You cannot walk, chew gum, drive a car, hit a jump shot, or take a bath without experiencing physical science. </li></ul><ul><li>Physical science is everywhere and you already know most of the answers…you just don’t know that you know it! </li></ul>
  2. 2. Scientific Theories and Laws <ul><li>When a hypothesis has been supported by repeated experiments a theory can be developed. </li></ul><ul><li>A THEORY is a well tested explanation for why things work the way they do. There are those who believe a theory is a best guess, but this is NOT the case. Again, a theory is a WELL TESTED explanation, not a guess. </li></ul><ul><li>A SCIENTIFIC LAW does not attempt to explain why things happen, only that it does happen. </li></ul><ul><li>Gravity is described by the law of gravitation. We have repeatedly observed objects falling and thus we have the LAW gravity. A theory would attempt to explain how gravity works. </li></ul>
  3. 3. <ul><li>Cycle repeats many times. </li></ul><ul><li>By you and by others </li></ul><ul><li>The hypothesis gets more and more certain. </li></ul><ul><li>Becomes a theory </li></ul><ul><li>A thoroughly tested model that explains why things behave a certain way. </li></ul>Observations Hypothesis Experiment
  4. 4. <ul><li>Theory can never be proven. </li></ul><ul><li>It is the best explanation </li></ul><ul><li>Useful because they predict behavior </li></ul><ul><li>Help us form mental pictures of processes ( models ) </li></ul>Observations Hypothesis Experiment
  5. 5. <ul><li>Another outcome is that certain behavior is repeated many times </li></ul><ul><li>Scientific Law is developed </li></ul><ul><li>Description of how things behave </li></ul><ul><li>Usually an equation </li></ul><ul><li>Law - how </li></ul><ul><li>Theory- why </li></ul>Observations Hypothesis Experiment
  6. 6. Observations Hypothesis Experiment Prediction Experiment Modify Law Theory (Model)

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