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.
water erosion can beat up against a rock and erode away sediment +++ That's a fair stab at how sea-caves develop, but in limestone the action is dissolution by ground water o â¦ f the rock's calcium carbonate, its primary constituent. mountain is a sharpened peak formed by the glacial actions of three cirques on a mountaintop. Since we know that a cirque is a bowl-shaped basin formed by EROSION and a moun â¦ tain horn is formed by three CIRQUES it becomes clear that mountain horns are formed by erosion.