Representation of Heights Flashcards
Heights on a map
Spot Heights Trigonometrical Status Layer tints of colour Form Lines Hachures Hill Shading Benchmark Contours
Contour lines
A contour line connects all points on the map that has the same height above sea level
Form Lines
These are contour lines drawn from spot heights or from heights not accurately measured
Hachures
is a short line used for shading and representing the direction and steepness or slopes of a hill.
Hill Shading
This is similar to the method of shading by hachuring with light and dark shading
Benchmark
These are accurate measurements and are shown on some maps by a special symbol
layer tints of colour
These are used to indicate heights. Maps are sometimes coloured to show heights. Green is generally used for low lands, a yellow colouring for high land and brown for high mountains.
Trigonometrical Status
These are indicated by a triangle which encloses a dot. Know the major trig and the minor trig
Spot heights
These are shown by dots on a map with the height below it.