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.
The 3 landforms created by wave erosion sometimes called coastal  erosion are headlands and bays, cliffs and wave cut platforms and  finally caves, arches, stacks and stumps â¦ . Wave erosion is the  wearing away of land and the removal of beach by wave currents.
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.