Across
- 1. - liquid rock below the Earth's surface
- 4. - a ring of muscle that holds the baby in place
- 9. - the cutting down of trees
- 10. - the name given to an unborn baby
- 13. - a piece of rock orbiting the Sun
- 15. - a reproductive cell
- 17. - a small section of a plant that can grow
- 18. - planets made of rocks
- 19. - the rocky outer layer of the Earth
Down
- 2. - mixture of gases surrounding the Earth
- 3. - the "sticking together" of sediments
- 5. - the hottest planet
- 6. - the layer of the atmosphere where weather occurs
- 7. - liquid rock above the Earth's surface
- 8. - the only natural satellite of the Earth
- 11. - tiny hair on the surface of some cells
- 12. - the physical changes that happen to a person
- 13. - a scientist who studies space
- 14. - the brain of a cell
- 16. - the cosmos