Across
- 1. Influential scientific work on physics and motion.
- 3. Force that attracts objects toward one another.
- 8. Instrument used to view tiny objects.
- 9. Scientist who improved the telescope and supported heliocentrism.
- 11. Astronomer who described planetary motion.
- 13. Continuous movement of blood through the body.
- 14. Path followed by an object around another object.
- 15. Change in position over time.
Down
- 2. Tendency of an object to resist changes in motion.
- 4. Instrument used to observe distant objects.
- 5. Describing an Earth-centered model of the universe.
- 6. Scientist who authored Principia Mathematica.
- 7. Scientist who formulated laws of motion and gravity.
- 10. Reliance on observation and experience.
- 12. Reliance on reason as a source of knowledge.