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| is an organized way of gathering and analyzing evidence about the natural world. |
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| the act of noticing and describing events or processes in a careful, ordered way. |
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| A logical interpretation based on prior knowledge and experience. |
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| possible explanation for a set of observations or possible answer to a scientific question. |
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| experiment in which only one variable is changed. |
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| factor in a controlled experiment that is deliberatly changed; also called manipulated variable. |
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| variable that is observed and that changes in response to the independent variable; also called the responsing variable. |
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| group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable. |
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| evidence; information gathered from observations. |
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