Geographical Techniques and calculations

Question 1

P2 p5 2009

Identify the features marked P, Q, R and S on the cross section

Answer 1

P = Road
Q= Mesina waters/stream/non perenial
R= Railway line
S= Power line/ Cut line/ hiking trail

Question 2

P2 p5 2009

Are features P and R intervisible?

Answer 2

Yes

Question 3

P2 p5 2009

Give a reason for your answer to question 2

Answer 3

No High-Lying ground/obstructions between 2 given points

Question 4

P2 p5 2009

Calculate the vertical exaggeration for the given cross section. Show ALL your calculations

Answer 4

Vertical exaggeration = vertical scale / horisontal scale
= 1:500/555 / 1: 10 000
= 1 / 500/555 x 10 000 / 1
= 18 - 20 times

Question 5

P2 p5 2009
Calculate the average gradient between spot height 532 (F3) and spot height 553 (E2) on the topographical map. Show ALL your calculations

Answer 5

Vertical Interville/Rise = 553 - 532 = 21m
Horizontal Equivelant / distance = 2,5cm x 500 (Range 2.4 - 2.6cm} = 1250m
Gradient = Vertical Interville / Horizontal Equivelant
= 21 / 1250
= 1 / 59.52 / 1:59.52 / 1 in 59.52
Range : 57 - 62

Question 6

P2 p5 2009

Would you consider the gradient that you have calculated in Question 5 to be steep or gentle

Answer 6

Gentle

Question 7

P2 p5 2009

Explain your answer to question 6

Answer 7

Walk over LONG distance to rise 1m
Large ratio between distance and hight
Contour lines far apart