Which technique involves detecting and measuring characteristics by analyzing reflected and emitted radiation from satellites or drones?

• A. Remote Sensing
• B. Soil Science
• C. Cover Cropping
• D. Genetic Engineering

Answer: (A)

Detecting and measuring characteristics by analyzing radiation that objects reflect or emit from satellites or drones is remote sensing. Sensors on these platforms collect data across multiple wavelengths, including visible and infrared, and sometimes beyond. By interpreting how surfaces reflect or emit energy in those bands, we infer information such as crop health, moisture levels, vegetation cover, biomass, and soil properties over large areas without physical contact. This capability to monitor changes over time and across wide regions makes remote sensing a powerful tool in agronomy and environmental science. The other terms describe different ideas: soil science focuses on the properties of soil itself, cover cropping is a farming practice to protect and improve soil, and genetic engineering involves altering organisms at the genetic level. The technique described, however, relies on reading radiation from above to extract environmental characteristics, which is remote sensing.