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Introduction to The Scientific Method Spring08

Introduction to The Scientific Method Spring08 -...

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    Announcements No Class or Lab next Monday. Ceasar  Chavez Holiday.
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    Characteristics of Life Utilize energy from environment Reproduce Respond to Stimuli (internal/external) Homeostatic Grow and Develop Adapted Organized
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    Introduction to The Scientific  Method
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    What is the Scientific Method? A system of investigation that consists of  three major steps: Step 1 = gathering facts or making an  observation Step 2 = developing a hypothesis  (explanation) to explain your  observation Step 3 = testing your hypothesis
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    Step 1 for Primrose Example  Observation =  Plants on the northern  side of your house are large and  blooming profusely, while those on the  southern side of the house are small,  with few blooms
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    Step 2 for Primrose Example Note the following – Soil is dry on the southern side of the  house, but moist on the northern side of  the house, thus, Hypothesis =  The primroses on the  southern side of the house show poor   growth because the soil there is too dry.
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    Step 3 Testing Your Hypothesis  Requires Four Sub-steps Designing an  experiment Making a  prediction  about the outcome  of the experiment (based on the  assumption that your hypothesis is  correct) Conducting the experiment and  collecting  data  (results) Drawing a  conclusion  = interpreting  the results of the experiment
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    What is an Experiment? A scientific investigation carried out  under  controlled conditions .
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