Which materials do not return great detail in radar contact composition?

• A. Conductive materials
• B. Composite materials
• C. Nonconductive materials
• D. Insulating materials

Answer: (C)

Radar returns depend on how the material interacts with the radio wave, especially its electrical properties. Conductive materials push electrons to oppose the incoming field, producing strong, coherent backscatter that highlights surface features and can reveal more about what the object is made of. Composite materials can give mixed reflections from different layers or constituents, often providing more detail about internal makeup than a uniform material.

Nonconductive materials, on the other hand, don’t have free electrons to generate strong backscatter. The radar energy is more likely to be absorbed or diffusely scattered, resulting in weak, vague returns that don’t carry much detail about composition. Insulating materials are a type of nonconductive material, so they share this tendency to yield less detailed radar contact composition.