Chapter 1, Section 2


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Nature of Science and Technology - Chapter 1, Section 2 - "Scientific Inquiry"

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Chapter 1, Section 2

  1. 1. Scientific Inquiry<br />Chapter 1, Section 2 – The Nature of Science & Technology<br />
  2. 2. Scientific inquiry refers to the diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather.<br />What is scientific inquiry?<br />
  3. 3. Scientific inquiry often begins with a problem or question about an observation<br />Some questions CANNOT be answered by scientific inquiry<br />Questions dealing with personal tastes or judgments <br />Posing Questions<br />
  4. 4. A hypothesis is a possible explanation for a set of observations or answer to a scientific question<br />IS NOT a fact<br />MUST be testable<br />Developing a Hypothesis<br />
  5. 5. Designing an experiment requires several steps:<br />Controlling variables<br />Controlling the Experiment<br />Forming “Operational Definitions”<br />On the next few slides we will look at these steps in further detail……<br />Designing an Experiment<br />
  6. 6. A variable is a factor that can change in an experiment<br />The one variable that is purposely changed to test your hypothesis is the MANIPULATED VARIABLE (or independent variable)<br />The factor that MAY change in response to the manipulated variable is the RESPONDING VARIABLE (or dependent variable)<br />Controlling Variables<br />
  7. 7. An experiment in which only one variable is manipulated at a time is a CONTROLLED EXPERIMENT<br />Why is it important to control your experiment???<br />Controlling the Experiment <br />
  8. 8. An operational definition is a statement that describes how to measure a particular variable or define a particular term<br />Forming operational definitions<br />
  9. 9. Data are the facts, figures, and other evidence gathered through observations<br />Keep track of data in a data table<br />Then make a graph of your data….<br />Collecting and Interpreting Data<br />
  10. 10. A conclusion is a summary of what you have learned in an experiment<br />Points to consider in your conclusion:<br />Does the data support the hypothesis?<br />Did you collect enough data?<br />Did anything happen that may have affected the results?<br />Address these points in your summary<br />Drawing conclusions<br />
  11. 11. An important part of the scientific inquiry process is communicating your results<br />Communicating is the sharing of ideas and experimental findings through writing and speaking<br />Communicating<br />
  12. 12. A scientific theory is a well-tested explanation for a wide range of observations or experimental results<br />A scientific law is a statement that describes what scientists expect to happen every time under a particular set of conditions<br />Scientific Theories and Laws<br />