Nav 1_4_01:Hills of Braemar

Contours – Key Points:• Contour lines every 10m height

change• Bold contour line every 50m

height change• Closer together = steeper slope• Farther apart = gentler slope• Spot heights

Group Task: Calculating HeightsLocate the features at the following Grid References and calculate their elevation above sea level to within 10m1.Triangulation Pillar on summit of Ben MacDui

(NN 988 989)2.Loch Mhairc (NN 886 797)3.Knoll (NN 861 697)4.Hut (NO 173 810)5.Monument (NO 157 928)6.Track End (NO 036 863)7.Head of burn (NO 011 677)8.Waterfall (NO 064 777)

Answers:1. 1309m (!)2. 645m3. 550m4. 845m5. 330m6. 740m7. 535m8. 780m