Basically, a passive radiator is a reactionary device as the name suggests. When a driver (such as a subwoofer) is mounted to a sealed speaker box (enclosure), the physical forward/back movement of the speaker affects the internal air pressure of the enclosure.
Three landforms created by wind are; sand dunes, yardangs (half-teardrop shaped formations hill sized, and deflation hollows (wind swept depressions.
As a result of these processes affecting the coastline, a number of landforms are created. We can categorize the landforms into two categories: features of erosion and features of deposition. Features of erosion include cliffs, notches, wave-cut platforms, stacks and headlands and bays, caves, arches.While features of deposition include beaches, spits, tombolos, bars, etc.e can categorize the landforms into two categories: features of erosion and features of deposition. Features of erosion include cliffs, notches, wave-cut platforms, stacks and headlands and bays, caves, arches.