Across
- 2. covers 71% of Earth's surface
- 4. ____core, depth of 2,900 km, liquid
- 7. organized group of related objects that interact
- 9. a place where matter or energy is stored
- 11. layer underneath the crust
- 12. Earth's magnetic field
- 14. less rigid layer under lithosphere
- 15. blanket of gasses that surround the Earth
- 16. mostly solid part of the Earth
- 17. force of attraction between all objects
- 18. all life on Earth
- 19. spherical center of the Earth
- 20. lower boundary of the Earth's crust
Down
- 1. first scientist to explain gravity
- 3. study of complex abiotic/biotic relationships
- 5. anything that has mass and takes up space
- 6. and uppermost mantle
- 8. ability to do work
- 10. mantle rock under asthenosphere
- 13. ___ core, depth of 5,500 km, solid