What is the main advantage of using LiDAR in geological engineering?
A. Detecting thermal variations
B. Producing high-resolution 3D terrain models
C. Measuring soil moisture content
D. Mapping spectral reflectance
Answer: Option B
Solution (By Examveda Team)
LiDAR (Light Detection and Ranging) provides precise 3D measurements of surface topography by measuring laser pulse returns.This is critical for detailed terrain modeling, landslide detection, and infrastructure planning.This Question Belongs to Geological Engineering >> Remote Sensing And GIS In Geological Engineering
What is the primary principle behind remote sensing?
A. Collecting data by direct contact
B. Observing Earth from a distance using sensors
C. Drilling to collect soil samples
D. Using underground radar
Which of the following is an active remote sensing technique?
A. Aerial photography
B. LiDAR (Light Detection and Ranging)
C. Thermal infrared imaging
D. Multispectral scanning
Which GIS component is responsible for spatial data analysis?
A. Hardware
B. Software
C. Data
D. People
In remote sensing, what does spectral resolution refer to?
A. Size of the area covered
B. Ability to distinguish between different wavelengths
C. Number of pixels in the image
D. Time between image acquisitions
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