Longitudinal Waves. In a longitudinal wave, the motion of the medium is parallel to the direction of the wave. This means that the particles move left and right which in turn makes the other particles start to oscillate. Sound waves are longitudinal waves.
The name âZimbabweâ is an anglicized form of an African word meaning âstone housesâ, for the ruins of the Great Zimbabwe are comprised of several stone walls, monuments, and buildings built mainly of granite. The structures were created using a method called dry stonewalling, which requires a high level of masonry expertise.
Attempts below by the linguistic community to derive the origins of the name Africa get swamped by borrowed traditions from the Biblical source and by loan-words that migrated through various languages after the Tower of Babel (circa 2200 BC).