Across
- 4. Planetary orbits are in this shape, not perfect circles
- 6. A physical test to see if a hypothesis is correct
- 7. The idea that an object keeps doing what its doing unless interrupted by external force
- 10. The "Sun-centered" model
Down
- 1. The scientist that discovered the planets move elliptically
- 2. Method Step by step process to prove a hypothesis
- 3. The Earth centered view of our solar system
- 5. Galileo used this to see craters on the moon
- 8. Newton three laws explains how objects behave when in this
- 9. Universal force that keeps planets in orbit