1				2													3
		4								5				6
7								8
							9
															10
							11
12
											13
14
		15

Across 1. a systematic procedure 6. developed scientific method 9. a system of thought expounded by Rene 11. A system of planetary motion 12. sun-centered 13. he wrote, "On the Fabric of the Human Body" 14. the universe isa series of concentric spheres 15. a french philosopher

Down 2. Medieval scientists 3. Lived in the second century 4. first scientist to conduct controlled experiments 5. Taught mathematics 7. came from aristocratic family 8. attended Cambrige University 10. got trained from self-taught astronomer