Across
- 2. columns in a periodic table
- 5. a spherical model of earth
- 6. line of latitude around the middle of the globe
- 7. a thin gas that surrounds earth
- 9. study of climate/ weather
- 11. all the water on earth
- 12. distance east or west of the equator
- 13. low-density rock
- 15. a group of interacting parts that form a complex whole
- 17. high-density rock
- 19. distance north or south of the equator
- 20. all life on earth
- 21. represents Earth's three dimensional surface in two dimensions
- 22. particle in a atom with a negative charge
- 23. beneath the atmosphere and ocean
Down
- 1. study of the universe and all things in space
- 3. study of the ocean
- 4. inner sphere of earth
- 8. the smallest particle of a element.
- 10. study of the earth
- 11. scientific explanation for a set of observations
- 14. sources that can be replenished
- 16. theory to explain how earthquakes happen and how contents move
- 18. line of longitude at 0 degrees