Across
- 4. a substance that consists of atoms of only one kind
- 5. the attraction that the Earth has on an object on or near its surface
- 6. oval shapes
- 7. an earth-centered theory; having or relating to the earth as the center
- 8. to increase in number, volume, or scope
- 9. a period from the 1500's to 1700s in which many scientific advances changed peoples traditional beliefs
- 11. having or relating to the sun as the center
Down
- 1. the time span between the birth of parents and the birth of their children
- 2. the steps for an orderly search for knowledge
- 3. the belief that reason and experience must be present for the solution of problems
- 10. an explanation of how or why something happens