Across
- 2. the less dark part of a shadow
- 5. Small rocky bodies orbiting the sun mostly found beyond Mars
- 7. Earth is stationary while the sun and other planets move around it
- 8. The moon casts a shadow on a portion of Earth's surface
- 9. Low flat plains formed by ancient lava flows
Down
- 1. Gravitational pull of the sun and moon combine and the forces produce the greatest change between high and low tides
- 3. The average distance from the Earth to the Sun
- 4. Asteroid like bodies that eventually combine to form planets
- 5. The process of adding mass by combining with other planetesimals
- 6. A wide belt that extends out from beyond the orbit to Pluto to about 100AU