9th Grade Chapter 1 Lesson 5

9th Grade Chapter 1 Lesson 5

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  9 th Grade Chapter 1 Lesson 5 Pgs. 15-19 For Student Use Only
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  Scientific Method Theprocess that scientists use to investigate the secrets of nature is called the SCIENTIFIC METHOD Three major steps: Observing- gathering facts Hypothesizing- suggesting explanations Experimenting- testing explanations
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  Scientific Method Firststeps Observation includes- measurement, organization, and research of data (State the purpose or problem) Hypothesis- educated guess on what you think will happen Experiment- set up a test with 1 variable to test your ideas
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  Scientific Method Note:Many early “scientists” failed to check their ideas with experiments. Theories and Laws Theory- when hypothesis passes the test of many experiments and has the support of scientists it becomes a theory Law- when a theory is verified by enough observations and experiments stands the test of time it becomes a scientific law
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  Scientific Method PredictionsScientists use what they know to make predictions about whether their hypothesis will work Predictions are testable and must be able to be accurately tested
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  Scientific Method Allscientific predictions are based on assumptions. Assumptions in Science: The universe is lawful, orderly, and operates according to physical laws. Causality- the law of cause and effect- things that happen in the universe have rational causes and the same cause will have the same effect