Roman Inventions Horváth Dávid

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Across
  1. 2. is a type of pipe organ blown by air
  2. 6. is a malleable metal alloy consisting of tin
  3. 8. is a farm tool for loosening or turning the soil
  4. 9. is a composite material composed of aggregate bonded together with a fluid cement
  5. 11. is a system of central heating
  6. 13. is a glassforming technique that involves inflating molten glass into a bubble
  7. 14. is an instrument used for measuring density or relative density
  8. 15. is a self-contained housing unit
Down
  1. 1. is a type of chemical compound
  2. 3. an open-air venue used for entertainment
  3. 4. is a vertical curved structure
  4. 5. is an ancient and historic mining method using a flood or torrent of water to reveal mineral veins
  5. 7. is a farm implement
  6. 10. is an instrument used for measuring the distance traveled by a vehicle
  7. 12. is a binder, a chemical substance