Sara Wynne-Pari Environment Wales Development Officer Cynnal Cymru .
Contour Calculation Skills - Cynnal · UNIT 33; Skills for Land based Outdoor & Adventurous...
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Contour Calculation Skills
Transcript of Contour Calculation Skills - Cynnal · UNIT 33; Skills for Land based Outdoor & Adventurous...
Contour Calculation Skills
Contour lines on Ordnance survey maps
• Contours are used to show height
• They are always orange/light brown
• On a map each contour is 1:25,000 – each contour shows a gain of 10 metres in height.
• The closer the contours the steeper the slope.
• Contours are always circular. (the height of a standard 2 storey house)
Height of house
Contours
Side View
Top
Sea level
Contours and landscapes
Contours and landscapes
Contours and landscapes
Contours and landscapes
Examples of landscapes
Contours and landscapes
A
B A
Comparing images
