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NIS - BIOLOGY. Lecture 1 The Nature of Science and the Scientific Method Ozgur Unal. NIS - BIOLOGY. Lesson Objectives: Explain the characteristics of science Compare something that is scientific with something that is not scientific Summarize the scientific method

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nis biology

NIS - BIOLOGY

Lecture 1

TheNature of ScienceandtheScientificMethod

OzgurUnal

nis biology1

NIS - BIOLOGY

Lesson Objectives:

Explain the characteristics of science

Compare something that is scientific with something that is not scientific

Summarize the scientific method

Describe the difference between an observation and an inference

Differentiate among control, independent variable, and dependent variable

the nature of science

TheNature of Science

  • Science is a processthatusesobservationandinvestigationtogainknowledgeabouttheevents in nature.

Science: What comes to your mind?

  • Observation:Act of gatheringinformation
  • Inferences:Drawingconclusionsfromobservations
  • Investigation: Includes observing,
  • experimenting, modelling
the scientific method

TheScientificMethod

ScientificMethod

the scientific method1

TheScientificMethod

Hypothesis: An educatedguess

Experiment: A wayto test hypothesis

Collect data

Analyze data

Draw conclusions

Serendipity?

  • Experimentsincludevariables:
    • Dependentvariables
    • Independentvariables
    • Constants
the scientific method2

TheScientificMethod

Question: Howdoesthethickness of theseedcoataffectthegermination rate of theseeds?

Hypothesis?

  • Ifthethickness of thecoating is smaller, theseedsgerminatefaster.
  • Design an experimenttotestyourhypothesis:
    • A seedwithscratchedcoat
    • A seedwith a hole in thecoat (nicked)
    • A seedwith an unscratchedcoat
the scientific method3

TheScientificMethod

Coatingthickness

Germination rate

Temperature, amount of sunlight, wateretc.

Identifyvariables:

Independentvariable:

Dependentvariable:

Constant:

  • Control: Theseedwith normal coatingis usedtocomparethegrowthrates.
the scientific method4

TheScientificMethod

Performtheexperiment, collectandrecordyour data:

  • Drawconclusions: ??
  • Shareyourresults: Communicate
the scientific method5

TheScientificMethod

Astronomy vs Astrology

Whichone is a science? Why?

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