Page 66 - Geography_n_Environment

(b) Take a piece of paper and fold it to create a straight edge.
Place the edge parallel to the straight-line AB and accurately
mark and label the points as A and B on the paper. Make sure

it aligns perfectly with points A and B as shown in Figure 5.

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A B

A Folded paper B

Figure 5: Measurement of distance from points A and B using a piece of
paper

(c) A map distance from point A to B marked on the folded paper
can be converted into real ground distance using a linear scale

or ratio scale. To use a linear scale, place the folded paper
along the scale by aligning point A with zero (0) and point B with
the corresponding point on the right side of the linear scale. If
point B is aligned with a certain number on the scale, as shown

in Figure 6, that number represents the real ground distance
A
B
between points A and B. In this case, the ground distance from
point A to B is 3 kilometres.
A Karatasi iliyokunjwa B
1000 500
Metre 0 1 2 3 Kilometre

A Folded paper B

Figure 6: Point B is aligned with the number 3, representing a distance of 3
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kilometres from point A to point B
If point B is between two numbers on the linear scale, mark and
label the number on the left side of point B (1) on the folded paper,
as shown by the red mark and number in Figure 7(a).

1000

Meta 500 0 1 2 3 Kilometa

59

A Karatasi iliyokunjwa B
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