Question

Which of the following shows highest reflectance in all rock types?

• A. Concrete
• B. Bare soil
• C. Gravel
• D. Shingles

Hint:

Man-made surfaces like concrete usually have higher and more uniform reflectance than natural surfaces.

Answer 1

The Correct Option is A

When evaluating different surfaces and materials, concrete typically demonstrates high reflectance. In applications like remote sensing and land cover analysis, concrete structures such as roads and buildings reflect a substantial portion of incident solar energy. In contrast, materials like bare soil, gravel, and shingles may offer moderate reflectance, though this can be influenced by factors such as moisture content, texture, and material makeup. Concrete's consistent structure and lighter color contribute to its higher and more uniform reflectivity when compared to natural earth and rock surfaces. Consequently, concrete exhibits the greatest reflectance among the provided options.