lecture3

lecture3 - Life Science 15 Concepts and Issues Lecture 3...

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Life Science 15: Concepts and Issues Lecture 3: Scientific thinking and decision making 1/17/12 I. Scientific thinking- an efficient way to learn about and understand the world II. Hypotheses must be tested with critical experiments III. Controlling variables makes an experiment powerful IV. Avoid the lure of pseudoscience and anecdotal observations Scientific Method: 1. observations 2. hypothesis 3. predictions 4. experiments 5. conclusions, revise hypothesis Q: Does it rain more on weekends? -take data on spreadsheet -rains 22% more on Saturdays than Mondays- WHY?- idea -more particulate matter on weekends due to build-up all week from more driving, enhances cloud formation and therefore rain -where did they measure the rainfall? East coast -in the ocean, it rains everyday equally Scientific thinking illuminates situations in which we should change what we think. The “Critical Experiment” -putting a hypothesis to the test -the results can decisively determine whether a hypothesis is correct
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This note was uploaded on 04/10/2012 for the course LS 15 taught by Professor Phelan during the Spring '08 term at UCLA.

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lecture3 - Life Science 15 Concepts and Issues Lecture 3...

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