Across
- 2. Theory developed by Copernicus that the sun is the center of the universe
- 6. A Polish astronomer who proved that the Ptolemaic geocentric system was inaccurate, he proposed the theory that the sun, not the earth, was the center of the solar system
- 7. German astronomer who first stated laws of planetary motion (1571-1630). He discovered that planets orbit elliptically, and not in a perfect circle.
- 8. Isaac Newton's idea that all things in the universe were affected equally by the same forces
- 9. A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions
Down
- 1. The intellectual movement in Europe, initially associated with planetary motion and other aspects of physics, that by the seventeenth century had laid the groundwork for modern science
- 3. English mathematician and scientist- invented differential calculus and formulated the theory of universal gravitation, a theory about the nature of light, and three laws of motion
- 4. Ancient Roman theory that saw the earth as the center of the universe
- 5. Astronomer and inventor of the telescope. His ideas supported Copernicus and got him in trouble with the Catholic Church