Orienting With Another Map (Grade 11 NSC Matric Geography): Flashcards
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Practise the cards
10 cards from this deck
Definition of 'orient'
Definition of 'orient'
Align aerial photo with map using corresponding features
Why orthophoto maps easier to orient
Why orthophoto maps easier to orient
Less distortion, direction/height info provided, features marked
What orthophoto maps combine
What orthophoto maps combine
Visual advantages of photos + geometric accuracy of maps
Focus on what when matching features
Focus on what when matching features
Shape and relative position (not size)
Step 1 of orientation process
Step 1 of orientation process
Find distinctive landmarks on both photo and map
Examples of good landmarks
Examples of good landmarks
Road intersections, rivers, buildings, landforms, coastlines
Step 2 of orientation process
Step 2 of orientation process
Identify north direction
Direction shadows fall in South Africa
Direction shadows fall in South Africa
South (shadows fall to the south)
Step 3 of orientation process
Step 3 of orientation process
Physically turn photo to align with map
Why feature size unreliable for matching
Why feature size unreliable for matching
Photos and maps often have different scales