Discussion
Which of the following is small scale Aerial photo ?
Answer: D
The small-scale photo is 1 : 250000.
A map or photo scale is a fraction, so the larger the denominator, the smaller the fraction and the smaller the scale. At 1 : 250000, 1 cm on the photo covers 2.5 km on the ground: a large area with little detail, which is what 'small scale' means.
1 : 10000, 1 : 25000 and 1 : 50000 are larger scales, showing smaller areas in more detail. The common trap is to think a bigger number means a bigger scale.
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