Which phenomenon occurs when a beam of radio waves hits a mass of smaller materials and spreads in different directions?

Which phenomenon occurs when a beam of radio waves hits a mass of smaller materials and spreads in different directions?

• A. Reflection
• B. Diffraction
• C. Absorption
• D. Scattering

Answer: (D)

When radio waves encounter a mass made of many small particles, the energy is redirected in many directions rather than bouncing off in a single path. This spreading of energy is called scattering. Each tiny particle scatters part of the incident wave, and the collective effect of countless scatterers sends energy outward in multiple directions, which can lead to signals arriving from different paths (multipath). This differs from reflection, which involves a smooth surface sending energy off at a specific angle based on the incident angle; diffraction, which is the bending of waves around edges or through openings; and absorption, where energy is taken up by the material and converted to heat rather than being redirected.

When radio waves encounter a mass made of many small particles, the energy is redirected in many directions rather than bouncing off in a single path. This spreading of energy is called scattering. Each tiny particle scatters part of the incident wave, and the collective effect of countless scatterers sends energy outward in multiple directions, which can lead to signals arriving from different paths (multipath).

This differs from reflection, which involves a smooth surface sending energy off at a specific angle based on the incident angle; diffraction, which is the bending of waves around edges or through openings; and absorption, where energy is taken up by the material and converted to heat rather than being redirected.