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Lecture 1: Intro to Plants, Intro to Science
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Why do we love plants? Plants are:
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People and Plants l We affect each other. – how? »We can’t live without them! »They exchange CO 2 for O 2 – mitigates greenhouse effect.
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Plants are sources l of food l of paper l of fibers l of medicines
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Life without l chocolatesugar l vanillacinnamon l peppermahogany l cherry woodebony l cottonlinen l rosesorchids l paperoxygen l aesthetics
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l The word science is derived from a Latin verb meaning “to know” l Science developed from our curiosity about ourselves and the world around us THE PROCESS OF SCIENCE
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The Process of Science: "The Scientific Method"
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What’s a Scientific Question? l Scientific Questions are….
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What’s a Hypothesis? l Tentative, but untested explanations l Make predictions that can be tested
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How do you test a Hypothesis? lVia controlled experiments or pertinent observations lKinds of variables:
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Experiments of classica l design l Individuals studied divided into two groups » Experimental group » Control group
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How does science really work in today’s world? l Exhaustive literature search + observations hypothesis l Prediction l Write a proposal, design experiment l Get money $$$$$ l Revise proposal based on $$$ l Experiment/collect data l Statistics l Write manuscript of results l Publish or perish
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FactLAW l A fact leads to a law, eventually. l What is a law? Observation
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l What happens if all of our experiments fail to negate our hypothesis? l What if workers in other parts of the community, county, state, country, or world also fail to negate your hypothesis?
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Theory l Definition: Observations Hypothesis LAW Experimentation Theory
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Finished? l How long do theories last?
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To Prove or Not to Prove l Experimentation can either support or reject a hypothesis. l Experimentation can never prove a hypothesis 100% correct. – why? l After each each experiment we need to re- evaluate our results and observations to either make changes in our hypothesis or more likely design a new experiment.
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