SCIENTIFIC INQUIRY Cornell Notes. Essential Questions: 1. How do scientists observe the world around them? 1. How do scientists observe the world around

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  • Essential Questions:1. How do scientists observe the world around them?2. How do scientists use the observations to make science?3. How do scientists share their ideas with others?

  • vocabularyControl/constantDataDependant/responding variableHypothesisIndependent/manipulated variableInferInterpretationLawModelQualitative observationQuantitative observationScientific methodTheory Variable

  • Qualitative descriptions (Mary has red hair.)Quantitative numbers (Mary was walking two dogs today.)When doing observations we ask:Who is thatWhat is thatWhen is that happeningWhere is that taking place

  • Observation: the fact, the cat is lying on the groundInference logical conclusion based on reasoningThe cat is dead.The cat is asleep.Why is the cat asleep? The cat is asleep because he is tired.Interpretation observation plus our personal value systemThe cat is so cute!

  • You will observe the following picture for a few seconds.Look at everything you think might be important.

  • Scientific MethodScientists use their observations to come up with questions and use the answers to solve problems. Scientists develop and TEST ideas using a systematic, step by step approach called the scientific method. The exact steps vary, but always include the following ideas.

  • II. Steps of the Scientific MethodPosing questions, developing hypotheses, designing an experiment, collecting and analyze data, drawing conclusions, and communicating with other scientists.

    In other words, its a way to solve a problem.

  • Step 1: Posing QuestionsDefine the focus of the researchObserve the world around you using all senses to gather information.Read books or other scientists researchMake sure your question is scientificCan be answered with evidenceNOT answered with an opinion

  • Step 2: Develop a hypothesisA hypothesis is a testable, educated guess to answer your question or is a possible solution to the problem based on your research or observationsYour prediction, use I thinkMust be TESTABLE!!

  • Step 3: Design an ExperimentParts of an experiment:Parameter: something that can be measuredThe parameter being tested is the manipulated variable or independent variable. This is what you are manipulating or changing on purposeThe parameter that you are measuring is called the responding variable or dependent variable. It changes in response to or because of the manipulated variable

  • Step 3: Design an Experiment (cont)The parameters that dont change are called the controls or constants. Your control group is used for comparison. The controls DO NOT change so you can be more sure that your manipulated variable CAUSED your responding variable to change,A controlled experiment is an investigation where only ONE parameter is manipulated at a time.

  • Step 4: Collecting and Analyze DataData are the facts figures and other evidence gathered through observationsAs you collect the data you got from your experiment, write it down.Organize your data into a chart, table, or graphUse pictures or photos to explain your resultsAnalyze your data by writing a summary of what happened in your experiment.

  • Step 5: Draw ConclusionsDo the results of your experiment support your hypothesis or not? A conclusion states whether or not the data supports the hypothesis.Do you need to revise your hypothesis and retest?

  • Step 6: Communicate your results to othersShare what you found out from your experimentScientists make presentations and write papers so others can repeat their experiments

  • Step 6: Communicate your results to others (cont.)Scientists use models, theories and laws to explain to people how the natural world works.Model: a picture, diagram or other representation when the real thing is not easy to seeTheory: a conclusion backed up by many scientists with the same resultsLaw: a theory that has been proven over and over again. A rule of nature.