How does a GIS system work?
What is are the 4 main parts of a GIS?
What is remote sensing?
What were the earliest maps made out of?
How long ago did people start using computer for mapping?
What does a hill look like on a topographic map?
What does a valley look like on a topographic map?
What doe a cliff look like on a topographic map?
What is the difference in maps at different scales?