Chapter 21 Vocabulary Quiz

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

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

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.

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

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

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

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

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.

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

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