Aerial Photographs and Orthophoto Maps (Grade 10 NSC Matric Geography): Flashcards
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Practise the cards
10 cards from this deck
Definition of orthophoto map
Definition of orthophoto map
Hybrid of aerial photograph & topographic map
Scale of orthophoto maps
Scale of orthophoto maps
1:10,000
Contour interval on orthophoto maps
Contour interval on orthophoto maps
5-metre intervals
The '5-10 rule' for orthophoto maps
The '5-10 rule' for orthophoto maps
5-metre contour intervals & 1:10,000 scale
How orthophoto maps are created
How orthophoto maps are created
Overlaying geo info onto vertical aerial photographs
Additional features on orthophoto maps
Additional features on orthophoto maps
Contour lines, trig stations, spot heights, names
Detail advantage of orthophoto maps
Detail advantage of orthophoto maps
Can identify individual houses vs grey blocks
Cost of orthophoto maps vs traditional
Cost of orthophoto maps vs traditional
Cheaper to produce
Update frequency of orthophoto maps
Update frequency of orthophoto maps
More easily & frequently updated
Natural features on orthophoto maps
Natural features on orthophoto maps
Ridges, spurs, valleys