Mapwkek Flashcards
What are contour lines?
Symbolic lines that indicate the height and shape of land.
What do joint contour lines indicate?
A cliff / vertical slope.
What is a contour interval?
The space between contours.
What color are contour lines on a topographical map?
Brown.
What is the contour interval on a topographical map?
20m.
What color are contour lines on an orthophoto map?
Black.
What is the contour interval on an orthophoto map?
5m.
List three features that show height.
- Trig beacon
- Spot height
- Bench mark
What happens to contour lines at a cliff or vertical slope?
They meet but don’t cross.
What characterizes a concave slope?
Closely spaced at the top and apart at the bottom.
What characterizes a convex slope?
Widely spaced at the top and close at the bottom.
What defines a hill in terms of contour lines?
An area of high ground where the contours are closed indicating the highest altitude.
What is a saddle in topography?
A gentle dip between two high points of a ridge, representing lower ground.
What is a spur in topography?
A point of land that projects out into a valley.
How do contour lines point down a slope?
In a V-shape.
