Surface Wave is best described as:

Surface Wave is best described as:

• A. Traveling in direct contact with the ground.
• B. Traveling at a height above the ground.
• C. Traveling only in the ionosphere.
• D. Only through the air without ground contact.

Answer: (A)

Surface wave means radio waves that travel in contact with the Earth's surface, hugging the ground and following its contour. This ground-propagated path relies on the earth’s conductivity and terrain, and it dominates at lower frequencies where the signal remains close to the surface rather than rising into the air or the ionosphere. It’s distinct from waves that travel higher up or rely on the ionosphere for long-range reach, and it’s not about propagation with no ground contact at all. So the best description is traveling in direct contact with the ground.

Surface wave means radio waves that travel in contact with the Earth's surface, hugging the ground and following its contour. This ground-propagated path relies on the earth’s conductivity and terrain, and it dominates at lower frequencies where the signal remains close to the surface rather than rising into the air or the ionosphere. It’s distinct from waves that travel higher up or rely on the ionosphere for long-range reach, and it’s not about propagation with no ground contact at all. So the best description is traveling in direct contact with the ground.