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Transcript of Bell work You are asked to write a biology textbook. What would your OWN definition of “science”...
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Bell work
You are asked to write a biology textbook. What would your OWN definition of “science” be?
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The Methods of ScienceA. Science studies natural patterns
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1. Science is classified into three main categories:Life Science
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Biology “the study of life”
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Many branches of Biology
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Earth Science
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Physical Science
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2. Science explains the natural world; explanations can change over time…for example?
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– Science also aims to use those explanations to understand patterns in nature and to make useful predictions about natural events.
– What are some examples of patterns that scientists use to make predictions?
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3. Scientists investigate nature by observations, experimentation, or modeling
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Science deals only with the natural world.
• Science must be based on evidence, not belief.
• Evidence comes from data and is constantly being re-collected to ensure its validity.
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Science, Change, and Uncertainty – Despite all of our scientific knowledge, much of
nature remains a mystery.
– Almost every major scientific discovery raises more questions than it answers. This constant change shows that science continues to advance.
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– Learning about science means understanding what we know and what we don’t know.
– Science rarely “proves” anything in absolute terms
– Scientists aim for the best understanding of the natural world that current methods can reveal.
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B. Scientific method - organized set of investigation procedures
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1. State a problem
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2. Gather information
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3. Form a hypothesis or educated guess based on knowledge and observation
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4. An experiment with variables is a common way to test a hypothesis
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5. Analyze data from an experiment or investigation
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6. Form a conclusion based on data
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7. Reduce bias by keeping accurate records, using measurable data, and repeating the experiment
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Prepare for Lab Tomorrow
• Read over your lab
• Answer the Pre-Lab Questions
• Don’t forget your lab safety contract!!!