Across
- 1. Danish nobleman who observed and mapped the stars
- 5. Physicist found that only part of the air is used in respiration and is helped discover oxygen
- 7. A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions
- 9. Study of stars on human behavior
- 10. Study of metals through purification
Down
- 2. Term used to state that earth is simply one of several planets to orbit around the sun
- 3. He believed Earth was in the center of the universe and that the planets moved around Earth in a circular movement
- 4. Created the idea of universal gravitation
- 6. Writer of "On the Motion of Animals" and studied mechanics of bodies
- 8. Creator of Laws of Planetary Motion: (Planets move elliptical, not uniformly)