Chapter 1 Bio.pptx - Chapter 1 The Science of Biology Ms...

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Chapter 1 The Science of Biology Ms. Luaces
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Design an experiment to a question you have always wondered about. Remember, the question has to be specific enough to be questioned, tested and analyzed. For example, how does the world work? Is not a testable question. How does ocean water regulate temperature in Miami? However, can be tested because it is more specific. Bell Ringer
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What is Science? What are the goals of science? What procedures are at the core of scientific methodology?
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What Science Is and Is Not Science is… Changing An organized way of gathering and analyzing evidence about the natural world Observation Process Looking for patterns and connections among events Propose explanations that are based on evidence, not belief. Science is not… Absolute Fact Collection of unchanging beliefs Examining supernatural phenomena
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The Goals of Science To provide a natural explanation for events in the natural world, and use those explanations to understand patterns in nature and/or predict natural events. However, science tends to raise more questions than give answers. Are we advancing or falling behind by doing this?
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Science Scenario: Your car isn’t starting. What’s wrong with it? What steps do you take to find out?
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Scientific Methodology: The Heart of Science Steps for the scientific methodology (a.k.a. the scientific method). Refer to Figure 1-3 on Pg. 6 for an example Make an observation and ask a question about it Form an inference and hypothesize an answer Conduct a controlled experiment -Independent variable -Dependent variable Collect and analyze the data from the experiment -Qualitative Data -Quantitative Data Draw conclusions The steps are not always in order though!! What about when you can’t make a controlled experiment? We can’t control elephants! -Qualitative or Quantitative?? Is it ok to test on humans? Why or why not? Scientific Method: Discovery Education Video
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The Importance of Data Watch out for sources of error Is it reproducible? Sample size? Experimenter’s bias? Don’t trust all the data you see… some may falsify it! In the late nineteenth century, a group of scientists called craniologists made measurements of brain and skull size to prove that women were intellectually inferior to men. These “scientific studies” were cited in attempts to deny women equal rights. Today, scientists know that among humans, brain size has nothing to do with intelligence.
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Qualities of a Good Scientist Curious Skeptic Need evidence to believe Open-minded to ideas that don’t necessarily mix with their hypothesis Creative
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Communicating Results: Reviewing and Sharing Ideas Peer Review -Like high-powered version of your high school lab report -Reviewed by experts for scientific methodology and reproducibility -Doesn’t guarantee that the work is correct, and doesn’t make it a truth!
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