SONAR (Sound Navigation and Ranging) uses sound waves to detect underwater objects and topography.It is distinct from LiDAR and Radar which use light and microwaves respectively.
Attribute data provides detailed information about spatial features, such as soil type, land use, or rock properties.This complements the spatial location data.
33.
Which of the following is NOT a benefit of using remote sensing in geological engineering?
Thermal infrared detects heat anomalies which helps locate geothermal activity such as hot springs or volcanic areas.This aids in hazard assessment and resource exploration.
35.
Which GIS tool helps to analyze the flow direction and accumulation of water over a terrain?
SAR sends microwave pulses and processes the returned signals to generate detailed images regardless of weather or lighting.Widely used in terrain and deformation studies.
37.
What type of GIS analysis is used to combine two or more spatial data layers?
NDWI helps in identifying surface water by contrasting near-infrared and green spectral bands.This aids in flood mapping and water resource management.
39.
What is the function of GPS in geological engineering projects?
GPS (Global Positioning System) provides precise geographic coordinates used for mapping and site investigation.It is essential for data georeferencing and field navigation.
40.
Which resolution type in remote sensing determines the frequency at which data is collected over the same area?
Temporal resolution refers to how often a satellite revisits or acquires data from the same location.High temporal resolution supports monitoring changes over time.