Mrs. Hermann's Bio Unit 1 Quiz Flashcards Review

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Scientific Method

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•  The process of objectively establishing facts through testing and experimentation.

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Controlled Experiment

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• An experiment in which all factors are held constant except for one: the independent variable.

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Independent Variable

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The variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable.

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Dependent Variable

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• The variable that is being measured or tested in an experiment

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Matter

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The “stuff” that exists in the universe. Everything you can see and touch is made of matter.

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Mass

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A measure of the amount of matter in a substance or an object

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Weight

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 The measure of the force of gravity on an object.

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Volume

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A measure of the amount of space that a substance or an object takes up.

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The Metric System

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The system of measurement primarily used in science and in countries outside of the United States. The metric system includes units of length (meters), mass (grams), and capacity (liters).

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The 3 basic metric units...

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Gram, Meter and Liter