Chapter 18 Crossword Puzzle (Matching Practice)

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Across
  1. 4. This magnetic mineral was useful in making compasses
  2. 5. This practice was done to protect against disease
  3. 6. a combination of science, magic, and philosophy that was practiced during medieval times
  4. 9. This invention made travel on the sea easier
  5. 10. This innovation allowed boats to travel through canals up mountains and hills
  6. 11. In the late 8th or early 9th century this form of currency replaced coins
  7. 13. This invention was made by alchemists and enabled the production of really powerful weapons
  8. 15. This printing involved having separate blocks for each character (letter)
  9. 16. This crossword puzzle is printed on this Chinese invention
Down
  1. 1. This type of boat sped up travel on rivers, lakes, canals, and bridges
  2. 2. This invention is fine Chinese pottery made by combining clay with quartz and feldspar
  3. 3. This bridge is supported by arches that are parts of a circle
  4. 7. This invention was more accurate than earlier time-keeping devices such as sundials and hourglasses
  5. 8. You could play poker with this Chinese invention
  6. 12. This technique was the first type of printing and involved gluing paper onto wood, then carving around the letters
  7. 14. This superior metal was made from blowing air onto cast iron.