4.18. Short questions

Try these first

1. 1.

   What defines a vertical photograph?

   Hint

   Think about the orientation of the camera.

2. 2.

   State one advantage of oblique photographs.

   Hint

   Consider what different angles can show.

3. 3.

   What is the primary difference between vertical and oblique photographs?

   • Vertical is from above; oblique is from a side angle
   • Both are the same
   • Oblique is from above; vertical is from a side angle

   Hint

   Consider their orientations.

4. 4.

   Relief displacement occurs due to which of the following factors?

   • True
   • False

   Hint

   Think about how height impacts positioning.

5. 5.

   An aerial photograph is taken at a flying height of 2000 m above a terrain with an average elevation of 150 m. The focal length of the camera is 100 mm. Calculate the scale of the photograph.

   Hint

   Convert the units appropriately and remember to account for elevation.

6. 6.

   Define relief displacement and provide two different scenarios where it may significantly affect height calculations.

   Hint

   Think of environments where elevation varies greatly.