CST Level 1 Land Surveyor Certification Practice

Which surveying type uses aerial and terrestrial photographs for mapping?

1. Photogrammetric surveying

2. Geological surveying

3. Hydrographic surveying

4. Mine surveying

The correct answer is: Photogrammetric surveying

Photogrammetric surveying is the type of surveying that utilizes aerial and terrestrial photographs for mapping purposes. This method involves the process of obtaining reliable measurements from photographs, especially those taken from the air, which enables surveyors to create detailed and accurate topographic maps. By employing principles of photogrammetry, surveyors can extract three-dimensional information from two-dimensional images, allowing for the accurate representation of the Earth's surface. This technique is particularly valuable in large-scale mapping and geographic Information systems (GIS), as it allows for quick and efficient data collection over extensive areas. In contrast, geological surveying focuses on understanding the Earth's physical properties and structures, hydrographic surveying pertains to the measurement and mapping of bodies of water, and mine surveying is concerned with the measurement and mapping of mining operations and infrastructure. Each of these surveying types has its specific applications and methodologies that do not typically involve the use of aerial or terrestrial photographs for mapping in the same way that photogrammetric surveying does.