Scientific Inquiry
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Scientific Inquiry

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Scientific Inquiry Scientific Inquiry Presentation Transcript

  • Scientific Inquiry
  • Posing Questions
    • After making observations and inferences many scientists will find themselves posing questions based on their observation.
    • Ex. Does the size of a shadow depend on the distance between the light and the object?
  • Developing Hypotheses
    • Developing a testable hypothesis is the next step.
    •  
    • A hypothesis is a possible answer to a scientific question or explanation for a set of observations.
    • Hypotheses have to be able to be tested.
    •  
    • Ex. Changing the distance between an object and a light source changes the size of the object’s shadow.
  • Developing Hypotheses
    • Hypotheses are not facts . They must be tested with multiple experiments before they can be proved to be true or false.
  • Designing an Experiment
    • Experiments are used to test a hypothesis.
    • Variables are examined first
    • A variable is a factor that can change in an experiment.
  • Designing an Experiment
    • Only one variable should be changed at a time.
    • That variable is known as the manipulated variable (or independent variable)
    • The variable that we expect to change as a result of the manipulated variable is known as the responding variable (dependant variable).
  • Designing an Experiment
    • All other variables must be kept constant .
    • This type of experiment is known as a controlled experiment .
  • Collecting and Interpreting Data
    • Data are the facts figures and other evidence gathered through observations.
    • Graphs are used to interpret quantitative data because they reveal trends or patterns in the data.
  • Drawing Conclusions
    • After interpreting data, scientists draw a conclusion about their hypothesis.
    •  
    • A conclusion states whether or not the data supports the hypothesis .
    • Sources of error and further experiments can also be discussed.
  • Communicating
    • The act of sharing your process, ideas and conclusions with others through writing or speaking.