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        | Organized set of investigation procedures that can include stating a problem, forming a hypothesis, researching and gathering information, testing a hypothesis, analyzing data, and drawing, conclusions. |  | 
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        | Educated guess using what you know and what you observe. |  | 
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        | Organized procedure for testing a hypothesis; tests the effect of on thing on another under controlled conditions. |  | 
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        | Factor that can cause a change in the results of an experiment. |  | 
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        | Factor  that changes as a result of changes in the other variables. |  | 
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        | Factor that, as it changes, effects the measure of another variable. |  | 
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        | In a experiment, a variable that does not change when other variable change. |  | 
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        | Standard used for comparison of test results in an experiment. |  | 
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        | Occurs when a scientist's expectations change how the results of an experiment are viewed. |  | 
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        | Can be used to represent an idea, object, or event that is too big, too small, too complex, or too dangerous to observe or test directly. |  | 
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        | Explanation of things or events that is based on knowledge gained from many observations and investigations. |  | 
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        | Statement about what happens in nature that seems to be true all the time; does not explain why or how something happens. |  | 
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        | Application of science to help people. |  | 
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