Ever since radio broadcasting began,one of the major complications in making AM radio channel assignments has been the fact that AM signals travel long distances-but only at night,not in the daytime.This phenomenon is caused by:

Question

Quizplus · Accepted Answer

The phenomenon described in the question is known as skywave propagation, wherein AM radio signals bounce off the ionosphere and travel long distances at night. Satellites, mirrors, solar flares, and aurora borealis do not directly cause this phenomenon.

Ever Since Radio Broadcasting Began,one of the Major Complications in Making