Across
- 3. test conducted to prove or disprove a hypothesis
- 4. who improved the telescope and supported Copernicus
- 7. that allows us to see distant objects in space
- 8. the laws of planetary motion
Down
- 1. Method
- 2. who proposed the heliocentric model of the universe
- 3. educated guess used in experiments
- 5. idea that the sun is at the center of the universe
- 6. process for conducting scientific research
- 7. force that pulls objects toward each other
- 9. the laws of motion and gravity