Across
- 1. Mountains are part of this Earth System
- 4. The air is part of this Earth System
- 5. This word meansground
- 7. This word means water
- 10. Satellites orbit in this layer of the atmosphere
- 11. The weather occurs in this layer of the atmosphere
- 13. Humans are a part of this Earth System
Down
- 2. Oceans are a part of this Earth System
- 3. This word means air
- 6. This word means cold or frozen
- 8. Meteors burn up in this layer of the atmosphere
- 9. The ozone layer is in this layer of the atmosphere
- 12. This is the outermost layer of the atmosphere
- 13. This word means life
