Roman Construction and Engineering

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Across
  1. 3. Digging a tunnel from both sides and meeting in the middle!
  2. 7. an important Roman road that linked Rome to southern Italy
  3. 9. a wedge-shaped or tapered stones used to construct an arch
  4. 12. Roman bridge that used the arch to distribute the bridge's weight and is still standing today!
  5. 13. heating the rock with fire, and then suddenly cooling it with cold water so that it would crack
Down
  1. 1. weapon resembling a crossbow, used in hurling missiles or large arrows
  2. 2. A roof shaped like a half-circle or hemisphere
  3. 4. the application of scientific knowledge for practical purposes
  4. 5. erosive strip-mining using the release of massive volumes of water down a slope
  5. 6. A device that uses running water to grind grain; A Roman Invention!
  6. 8. A structure that carries water over long distances
  7. 10. building material made by mixing small stones and sand with limestone, clay, and water - a Roman Invention!
  8. 11. devices used to hurl stones a great distance