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Nature of Science.

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Presentation on theme: "Nature of Science."— Presentation transcript:

1 Nature of Science

The things that scientists do when they study and investigate problems The intellectual skills that students use to solve scientific problems The basic process skills: -Observation -Classification -Measurement -Prediction -Communication -Inference

3 Science- a body of knowledge and the methods of gaining more knowledge.
3 Main Branches: 1. Life science: biology, zoology, botany, psychology, genetics 2. Earth science: geology, meteorology, astronomy, oceanography 3. Physical science: physics, chemistry, electricity

4 Nature of Science 5 Objectives:
Public- everyone is able to share, debate, scrutinize, and criticize the knowledge sources, where it can be found, which make it public: books, labs, internet, TV, radio, magazines, museums, newspapers, technology, seminars, universities Historic- looks at the past to figure out the present & predict the future Past info present  future

5 5 objectives con’t. Replicable- repeatable will get similar results if performing same experiment Tentative- subject to change Probabilistic- predictable, results are likely to occur, chances, statistics

6 Scientific Method An organized systematic way of thinking, the process for seeking a solution to a problem 6 Steps: 1.) Purpose- question, problem 2.) Research- go & find out information 3.) Hypothesis- educated guess, predicts an answer to the problem 4.) Experiment- design a test to prove or disprove your hypothesis 5.) Analysis- collect data & analyze it 6.) Conclusion- decide if hypothesis is correct,“possible” answer based on evidence If hypothesis proves incorrect, then go back to #1 Examples: cake, car

7 Definitions Independent variable = factor that is manipulated by the experimenter; x axis ex: time, days Dependent variable = factor that can change if the independent variable is changed; y-axis ex: height, weight Constant = does not change Control = shows results that are actually due to tested condition Model = idea, system, or math expression similar to idea being explained

8 Definitions con’t. Theory = based on many observations, repeated experiments, and makes testable predictions; can be changed with new info Law = basic fact that describes natural phenomenon. Cause of law may be unknown. “Law/rule of nature.”

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