Maps and Navigation

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Across
  1. 2. Imaginary line drawn to divide the earth into Northen and Southern hemispheres. Crosses several countries around the globe, one of them is Indonesia.
  2. 3. Imaginary lines that determine the east-west position on a surface of earth
  3. 5. Method of observing the positions of celestial bodies, used by sailors to find their way
  4. 7. A visualization of a certain place/area, usually drawn in a flat surface
  5. 9. One of the basic elements in a map, displays the meaning behind each symbols
Down
  1. 1. Any location on earth could be identified precisely with this grid system
  2. 4. Navigation tool that looks long and cross-shaped like wooden stick to measure angles
  3. 6. Developed by the US Departement of Defense, this system requires satellites to tell your exact location on earth
  4. 8. Navigation tool that was used in ancient times to measure the altitude beyond the horizon and celestial bodies
  5. 10. Systems used for environmental management, urban planning, and disaster response