10x50 crosswords for 8 to 12 year olds

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Across
  1. 3. Stringed instrument played with a bow
  2. 5. Vessel for steeping and serving tea
  3. 9. Underground passage for vehicles or trains
  4. 11. Head of state in a republic, often elected
  5. 12. Major road for long-distance travel
  6. 14. Percussion instruments played by striking
  7. 15. Waterway that flows towards a larger body of water
  8. 16. Dark area formed by blocking light
  9. 20. Transparent object used to focus light
  10. 22. System of government where citizens have a say
  11. 23. Vast body of saltwater covering much of the Earth
  12. 25. Sovereign ruler of an empire
  13. 27. Short poetic verse expressing personal emotion
  14. 30. Grassland ecosystem with scattered trees and shrubs
  15. 31. Literary form characterized by rhythm and emotion
  16. 33. Inland body of water, often surrounded by land
  17. 34. Divisions of a road for traffic
  18. 35. Extended work of fiction with complex characters
  19. 36. Woodwind instrument producing melodious tones
  20. 39. Lush forest with heavy rainfall and diverse life
  21. 42. Structure that spans a physical obstacle
  22. 43. Device for capturing photographs
  23. 44. Brass instrument with valves for producing sound
  24. 46. Inclined surface connecting levels
  25. 47. Framework for arranging crossword answers
  26. 48. Small dish under a teacup
Down
  1. 1. A popular morning beverage
  2. 2. Ruler with absolute power gained by force
  3. 4. The center of our solar system
  4. 6. Coniferous forest biome found in northern regions
  5. 7. Landform at the mouth of a river shaped like a triangle
  6. 8. Musical instrument with black and white keys
  7. 10. Strong coffee brewed by forcing hot water through finely-ground beans
  8. 11. Optical object that disperses light
  9. 13. Small rocky body in the solar system
  10. 17. Genre involving conflict and emotion, often performed
  11. 18. A mystery or a conundrum
  12. 19. Reflective surface
  13. 21. Vast system of stars, gas, and dust
  14. 24. Celestial body orbiting a star
  15. 26. Crossword, for example
  16. 28. Artificial waterway for navigation or irrigation
  17. 29. Arid land with little vegetation and scarce rainfall
  18. 32. Short prose piece exploring a particular topic
  19. 37. Portable device often used for reading
  20. 38. King or queen who holds ultimate authority
  21. 40. Sweet granulated substance
  22. 41. Hint or indication to solve a mystery
  23. 43. Icy object with a tail that orbits the Sun
  24. 45. Cold, treeless biome with permanently frozen subsoil