Topographic Maps (Grade 11 NSC Matric Geography): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
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Practise the cards
10 cards from this deck
What a cross-section shows
What a cross-section shows
Side view/profile of landscape features like hills & valleys
Two types of cross-sections
Two types of cross-sections
Cross-section (accurate, to scale) & sketch section (rough)
Horizontal scale for topographic maps
Horizontal scale for topographic maps
1:50 000
Horizontal scale for orthophoto maps
Horizontal scale for orthophoto maps
1:10 000
What vertical exaggeration does
What vertical exaggeration does
Makes hills & valleys appear steeper than they really are
Why vertical exaggeration is used
Why vertical exaggeration is used
To see elevation changes clearly on cross-section
First step in drawing a cross-section
First step in drawing a cross-section
Draw straight line on map between start & end points
How steep slopes appear on cross-sections
How steep slopes appear on cross-sections
Nearly vertical sections
How valleys appear on cross-sections
How valleys appear on cross-sections
Dips or low points in profile line
Professionals who use cross-sections
Professionals who use cross-sections
Architects, civil engineers, road builders, urban planners