Across
- 3. tiny organisms
- 5. a community of living things in a community
- 9. man-made object that orbits a planet
- 10. math class involving variables and equations
- 11. instrument used to view small objects
- 15. layer of gases surrounding earth
- 16. mountain that erupts with lava
- 17. tool used to find direction
- 19. gas humans breathe
- 20. government with elected representatives
- 24. a long work of fiction
- 25. process plants use to turn sunlight into food
- 26. object that attracts metal
- 27. flow of electricity, or movement of water
- 28. to change from liquid to gas
- 29. slow moving mass of ice
- 30. force that pulls objects to earth
Down
- 1. imaginary line around the middle of the earth
- 2. "out of 100"
- 4. government in which citizens vote
- 6. recognizable pattern of stars
- 7. figure of speech that uses does not use "like" or "as"
- 8. number representing part of a whole
- 12. chemical commonly used to disinfect pools
- 13. polygon with three sides
- 14. large collections of stars, planets, gas, and dust
- 18. where the sky appears to meet the land
- 21. large body orbiting the sun
- 22. computer input device for numbers and letters
- 23. completed path of electrical flow