Which satellite sensor provides multispectral images useful for geological mapping?

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