Across
- 1. A period of ten years
- 5. A device you use to look at the stars
- 7. 1.the political and economic theories of Karl Marx and Friedrich Engels
- 8. A device that measures temperature
- 9. Things dealing with the moon
- 10. The study of the stars
- 11. The study of the earth
- 13. Extremely active
- 15. Remembering something in your past
Down
- 2. One hundredth of a meter
- 3. An explosive device
- 4. A shape with 8 sides
- 6. The order of events that happened one after another
- 12. A form of government
- 14. A device that can locate objects under water