Maps

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Across
  1. 1. Early instrument that made mapmaking more scientific
  2. 3. Symbols that represent information on a map
  3. 7. Compass direction that appears at the top of a map
  4. 9. Mapmaking
  5. 11. A ratio of map size to ground distance
  6. 12. Heavy metal wheel that spins; used to keep planes and ships on course
Down
  1. 2. Mapmakers way of representing the spherical world on a flat surface
  2. 4. Method of mapmaking based on mathematical principles of triangles
  3. 5. Measured in degrees east or west of the prime meridian
  4. 6. Measures in degrees north or south of the equator
  5. 8. A special kind of picture that shows the spatial relationship between different places
  6. 10. A collection of maps