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.
Jupiterimages/BananaStock/Getty Images. Depositional landforms are the visible evidence of processes that have deposited sediments or rocks after they were transported by flowing ice or water, wind or gravity. Examples include beaches, deltas, glacial moraines, sand dunes and salt domes.hese piles were carried for long distances by the movement of glaciers, then deposited when the ice melted. Drumlins are tear-shaped depositional landforms created by the compression of such rubble. When glaciers melt, they drop the rocks and other sediments they are carrying into the landscape.