Module 1 Scientific Laws Ppt
- 1. PHYSICAL SCIENCE What is physical science? Physical science is an introduction to chemistry and physics What does this mean? Chemistry is the study of matter and energy Physics is the study of the physical world…basically, everything else You cannot walk, chew gum, drive a car, hit a jump shot, or take a bath without experiencing physical science. Physical science is everywhere and you already know most of the answers…you just don’t know that you know it!
- 2. Scientific Theories and Laws When a hypothesis has been supported by repeated experiments a theory can be developed. 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. A SCIENTIFIC LAW does not attempt to explain why things happen, only that it does happen. 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.
- 3. Cycle repeats many times. By you and by others The hypothesis gets more and more certain. Becomes a theory A thoroughly tested model that explains why things behave a certain way. Observations Hypothesis Experiment
- 4. Theory can never be proven. It is the best explanation Useful because they predict behavior Help us form mental pictures of processes ( models ) Observations Hypothesis Experiment
- 5. Another outcome is that certain behavior is repeated many times Scientific Law is developed Description of how things behave Usually an equation Law - how Theory- why Observations Hypothesis Experiment
- 6. Observations Hypothesis Experiment Prediction Experiment Modify Law Theory (Model)