1. THE BEGINNING OF MODERN SCIENCE Lesson 3

2. Early Ideas about the Earth’s Shape ◦ Babylonians thought the earth was hollow, to provide space for their underworld ◦ Egyptians thought the earth a square with mountains at the edge supporting the sky ◦ In the 4 th century B.C. the Greek philosopher Aristotle introduced geocentrism. The theory that the universe is earth centered. ◦ Early Christians believed God created man in his own image and the universe. Therefore Christians believed the Earth was in the center of the universe

3. Renaissance Scientists ScientistsDiscovery / Accomplishment Nicholas Copernicus (1473- 1543) From Poland Believed the Earth traveled around the sun = heliocentric Galileo Galilei (1564-1642) From Italy Improved the telescope; helped prove the ideas of Copernicus Isaac Newton (1642-1727) From England Discovered gravity

4. Scientific Method 1.Ask a Question 2.Research 3.Hypothesis 4.Test the hypothesis 5.Analyze data and draw conclusions 6.Share results