Chapter 21 Vocabulary Quiz

A model of the universe in which Earth is at the center of the revolving planets and stars.

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Based on the belief that the sun is the center of the universe

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one of Newton's three rules of motion; it explains that planetary bodies continue in elliptical orbits around the sun because every object in the universe is attracted to every other object by a force called gravity.

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A belief or theory that opinions and actions should be based on reason and knowledge rather than on religious belief or emotional response

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A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.

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A type of logic in which generalizations are based on a large number of specific observations.

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the view that knowledge originates in experience and that science should, therefore, rely on observation and experimentation

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A popular Enlightenment era belief that there is a God, but that God isn't involved in people's lives or in revealing truths to prophets.

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Idea that government should play as small a role as possible in economic affairs.

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A voluntary agreement among individuals to secure their rights and welfare by creating a government and abiding by its rules.

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