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28 Cards in this Set
- Front
- Back
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science
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an organized way of using evidence to learn about the natural world
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goals of science
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to investigate, explain, and make predications
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observation
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gathering information
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quantitative
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type of observation involving numbers
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qualitative
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type of observation that cant be easily measured
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bias
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a preference for point of view or opinion
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inference
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a logical interpretation based on prior knowlege and experience
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scientific method
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a logical, orderly way of solving a problm
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steps of the scientific method
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state the problem, form a hypothesis, experiment to test your hyp, make observations & collect data, draw conclusions, and publish resuls
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hypothesis
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a possible explanation for a set of observations or an answer to a scientific question
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three ways a hypothesis may arise
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prior knowledge, logical inferences, and imaginative guesses
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experiment
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a test of a hypothesis
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controlled experiment
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an experiment which has a control group as well as an experimental group. This group serves as a comparison/ Only one variable is changed at a time
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independent variable
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a variable that is meant to change
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dependent variable
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the changes that occur in response to the independent variable
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data
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information gathered from observation in the form of charts, inc
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conclusion
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detherming whether your hypothesis was supported or refuted(correct or incorrect)
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why publish results
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review, repeat, check
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theory
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a well tested explanation that unifies a broad range of observations
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absolute truths
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none, as new evidence is uncovered theories may be revised or even replaced
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Aristotle
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greek philosopher who made observations of the natural world tried to explain through reasoning
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spontaneous generation
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the belief that living things come from non living things also called abiogenesis
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biogenesis
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the belief that living things come from living things
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Frances Redi
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italian doctor who hypothesized that flied produced maggots
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Anton Van Leeuwenhoek
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discovered microorganisms while making lenses
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John Needham
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english scientist who used experiment to try and disprove redi's experiment
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Lazzaro Spallanzani
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Scientist that improved Needhams experiment by boiling gravy longer and sealing immediately
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Louis Pasteur
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french scientist who designed a flask with a long curved neck. Finally disproved theory of spontaneous generation.
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