Across
- 3. Developed the Law of Universal Gravitation; all physical objects
- 5. Developed precise thermometers filled with mercury to measure temperature
- 7. The first to use a telescope to study the stars (1610)
- 9. Believed that scientists needed to reject old assumptions
- 10. Rejected the traditional theory that all matter was composed of four elements
- 11. Believed that a better understanding of the natural world
- 13. Disproved the theory of combustion; a substance called phlogiston
Down
- 1. Established observatories to chart the movements of the stars and planets
- 2. Most of what was known about the human body was based on Galen’s work
- 4. Used Brahe’s data to formulate laws to describe planetary motion.
- 6. isproved many of Galen’s hypotheses (worked with apes and dogs in the 2nd
- 8. Proved that lightning and electricity are identical
- 12. Developed the heliocentric system (the Sun is at the center of the universe