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Published byBrittany Newman Modified over 8 years ago
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Scientific Method
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An organized way of solving a problem Requires critical thinking Must separate important information from unimportant information
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Step 1 Identify the Problem
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Define clearly what it is you want to solve Ex. What is causing the bees to abandon their colonies?
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Step 2 Gather Information on the Problem
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Data is collected by: Observations – two kinds: Direct – using our senses Indirect - using tools Research – using reliable sources
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Step 3 Form a Hypothesis
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Hypothesis - prediction using gathered information must be able to be tested experiments are done to test the hypothesis written as an if…………… then statement Ex. If a colony of bees is exposed to pesticides, then the colony will collapse
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Step 4 Plan and Perform an Experiment to Test the Hypothesis
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Hypothesis is tested in two ways: Field Study – Observations made in nature Information is collected in a natural setting Laboratory Experimentation – Information collected by a created setting
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Bee variety Air temperature Location Constant/ Controlled Variables Manipulated Variable Laboratory Experiment
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An experiment requires two types of variables: Constant/Controlled Variable – factors that stay the same throughout the experiment Manipulated Variable – factor that is changed on purpose
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Dependent/Responding Variable
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Dependent or Responding Variable – Variable being measured/tested/watched Variable that occurs as a result of the experiment
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Control GroupExperimental Group
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An experiment consists of two groups: Control Set – Up: Part of the experiment that does not contain the manipulated variable Kept unchanged Used as a comparison Experimental Set – Up: Part of the experiment that contains the factor being tested Contains the manipulated variable
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Step 5 Analyze Data
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Data – pieces of information that a scientist will gather and look at – information is collected through research, experiments and observations Conclusions can be made based on data Data table – a visual diagram that displays data from an experiment metric measurement – a system of measurement that scientists use
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Step 6 Draw Conclusions
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Step 6 Draw Conclusions Draw Conclusions – take your information and decide if your hypothesis was correct If you are right, you retest to be sure If you were wrong, you decide on a new hypothesis Communicate your results
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Drawing Conclusions Inference – a logical conclusion based on interpreting observations and data Prediction – a forecast of what will or might happen in the future Bias – an attitude of feeling one way over another
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Scientific Attitudes Curiosity – eager to learn Honesty – report observations and results truthfully Open-mindedness – accept new and different ideas Skepticism – question things Creativity – solve problems using thinking that is “outside the box”
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Hypothesis
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Hypothesis – possible solution to a problem Prediction of what might happen May or may not be true Based on observation and research Must be testable Written as an if (cause)….. then (effect) statement
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Theory
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Theory – a hypothesis that has been tested and supported many times Explains why something occurs Basis for describing patterns that we observe in nature Not an opinion If accepted – does not become a law
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Law
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Law – a general statement that describes some pattern in nature The statement must hold true no matter what Usually presented as a mathematical equation Is not an accepted theory Explains what happens not why
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Model
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Model – a description of something unfamiliar in a way that makes it familiar Helpful when we cannot observe the object of event directly or completely Built to find out why Also called a prototype
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Demonstration
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Demonstration – a model or display that shows how something works Does not test anything
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