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.
The UNIA founded by Marcus Garvey has a constitution which defines red, black, and green as the Pan-African colours: red representing the noble blood that unites all people of African ancestry, the colour black for the people, green for the rich land of Africa..
Gaelic Meaning: The name Africa is a Gaelic baby name. In Gaelic the meaning of the name Africa is: pleasant. Irish Meaning: The name Africa is an Irish baby name. In Irish the meaning of the name Africa is: pleasant. The name Africa is a Celtic baby name. In Celtic the meaning of the name Africa is: Agreeable.