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32 Cards in this Set
- Front
- Back
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Observation
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Observe and study. First step.
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Research
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Research your topic. Second step.
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Hypothesis
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Make a testable statement. Third step.
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Experiment
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Test the hypothesis with experiments. Fourth step.
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Collect Data
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Gather the information. Fifth step.
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Conclude
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Analyze the results and find if your hypothesis is correct. Sixth step.
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Publish
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Distribute the data into the scientific community if correct. Seventh step.
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Redi - Conclusion
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Flies come from eggs laid by other flies
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Needham - Conclusion
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Abiogenesis occurs
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Spallanzani - Conclusion
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Abiogenesis does not occur in sealed flasks
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Pasteur - Conclusion
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Spores are attached to dust particles
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Spontaneous Generation
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Life can arise from non-living matter.
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Redi- Hypothesis
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Flies come from eggs laid by other flies
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Spallanzani- Hypothesis
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Organisms survive short-term boiling & enter broths through loose seals
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Pasteur- Hypothesis
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Microbes come from spores attached to dust particles
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Needham- Hypothesis
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Spontaneous generation does occur
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Redi- Results
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Maggots on top of cloth covered jars of meat, Maggots in meat in the open jars
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Pasteur- Results
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Dusty areas caused more growth, No growth in S-necked flasks
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Spallanzani- Results
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Sealed flasks with no growth
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Needham- Results
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Loosely sealed flasks had growth several days after boiling broth
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Redi- Time & Place
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1668 in Italy
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Pasteur- Time & Place
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Early 1860's in France
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Spallanzani-Time & Place
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1799 in Italy
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Needham- Time & Place
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Late 1740's in England
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Redi- Flaw
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Kept air (vital force) out
Starts with R |
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Pasteur- Flaw
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Loose or no seal
Starts with P |
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Spallanzani- Flaw
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Kept air (vital force) out
Starts with S |
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Needham- Flaw
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Loose or no seal
Starts with N |
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controlled experiment
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only one variable is changed at a time, all other variables are kept controlled
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manipulated variable
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the variable that is deliberately changed
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responding variable
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the variable that is observed and that changes in response to the manipulated variable
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theory
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a hypothesis that is well supported by many scientists
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