Across
- 7. A Florentine astronomer who built the first telescope to prove planets and moons move.
- 8. An empirical method for acquiring knowledge.
- 10. Believed Earth was the center of the universe.
- 11. A scientist who discovered the laws of gravity.
- 12. Astronomer who calculated that planetary orbits are elliptical rather than circular shape.
- 13. Polish astronomer who proposed a heliocentric model of the universe, contradicting the Ptolemaic system that had dominated medieval cosmology.
- 14. Oval shape; in this case, planetary orbits being oval shape.
Down
- 1. A force in which every object in the universe is attracted to every other object - how objects fall and stay down!
- 2. Angry old cottage industry workers who lost their jobs and workers due to machines.
- 3. English doctor who made advances in anatomy when he discovered that the human heart ( not the arteries, as previously thought) pumps blood in a circuit throughout the body. He published a book with his findings in 1628.
- 4. The theory that the earth is in the center of the universe.
- 5. English statesman and writer; believed that by better understanding the world, scientists would generate practical knowledge that would improve people's lives.
- 6. The theory proposed by Nicolaus Copernicus that the sun is in the center of the universe.
- 9. French philosopher and mathematician; relied on mathematics and logic rather than experimental methods. Also wrote about doubt and uncertainty, and about casting aside everything he had ever learned and starting from scratch. The only thing he believed he could truly know to be true was that he himself existed - "I think therefore I am".