Across
- 5. one of Newton’s three rules of motion; it explains that planetary bodies continue in elliptical orbits around the sun because every object in the universe is attracted to every other object by a force called gravity
- 6. Earth-centered; a system of planetary motion in which the sun, moon, and other planets revolve around Earth
- 7. a systematic procedure for collecting and analyzing evidence that was crucial to the evolution of science in the modern world
- 8. the theory that says knowledge is achieved through observation
Down
- 1. a person who studies and tries to explain the world; a scholar or a thinker
- 2. the doctrine that scientists should proceed from the particular to the general by making systematic observations and conducting carefully organized experiments to test hypotheses or theories; a process that will lead to correct general principles
- 3. sun-centered; the system of the universe in which the planets, including Earth, revolve around the sun
- 4. a system of thought expounded by René Descartes based on the belief that reason is the chief source of knowledge
- 9. any of the concentric, revolving, spherical transparent shells in which, according to ancient astronomy, the stars, sun, planets, and moon are set