Nature of Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Descriptive Investigation | "I" do NOT change variables. I am merely recording observations. Example: Determining the number of cookies students buy at lunch.
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| Comparative Investigation | There are 2 or more different conditions and "I" do NOT change the condition. Example: Comparing the number of cookies bought versus the number of apples bought at lunch.
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| Experimental Investigation | There are 2 or more different conditions and "I" DO change the condition. Example: Determining if eating a cookie at lunch or not has an effect on the probability of getting a detention after lunch.
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| Observations | process of obtaining information by using the senses
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| Independent Variable (Manipulated) | It is what "I" change in an experiment
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| Dependent Variable (Responding) | something measured during an experiment to determine if there was a change. (responding to the new independent variable) Example: If you eat a cookie at lunch, you have a 25% greater chance of earning a detention. # of detentions is the DV
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| Constant (Controlled Variable) | something that is not changed throughout an experiment
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| Experimental Group | the group in an experiment that receives the changed variable being tested
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| Control Group | group in an experiment or study that does not receive new changed variable. All further experiments are compared to the control group.
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| Hypothesis | testable idea that leads to a scientific investigation. It is an "If, then" statement
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| Conclusion | a decision reached after an investigation. Answers if the hypothesis was "correct"
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| Trials | the numerous, repetitive times an experiment is completed. The more trials there are, the more accurate the results should be
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| Theory | A question that has already undergone extensive testing by various scientists and is generally accepted as being the explanation of an observation.
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| Law | Is a statement based on repeated experimental observations that describe some aspects of the universe and always applies under the same conditions.
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| Model | A description (it can be material, visual, mathematical or computational) of an object or phenomenon that shares important characteristic with the object or phenomenon.
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| Qualitative | data is not numerical, is observed using the 5 senses and describes the observation
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| Quantitative | data can be measured numerically and can be analyzed statistically
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| Inference | An educated guess on why something is happening or what may occur next
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Created by:
mvanderb
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