Intervisibility (Grade 12 NSC Matric Geography): Flashcards
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10 cards from this deck
What is intervisibility?
What is intervisibility?
Ability to see one location from another location
Line of sight meaning
Line of sight meaning
Clear view between two places
Effect of hills/mountains on intervisibility
Effect of hills/mountains on intervisibility
Block line of sight, preventing intervisibility
Flat terrain effect on intervisibility
Flat terrain effect on intervisibility
Usually good intervisibility
Step 1: Determining intervisibility
Step 1: Determining intervisibility
Draw straight line connecting the two points
Step 2: Determining intervisibility
Step 2: Determining intervisibility
Check if line passes through elevated terrain
Line cuts through terrain = ?
Line cuts through terrain = ?
No intervisibility
Line passes above all terrain = ?
Line passes above all terrain = ?
Intervisibility exists
What does cross-sectional diagram show?
What does cross-sectional diagram show?
Side view of landscape along specific route
If line barely touches terrain feature?
If line barely touches terrain feature?
No intervisibility (still counts as obstruction)