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..
Colors. Tanzania Flag-Colors meaning. green represents the natural vegetation of the country, gold its rich mineral deposits, black the native Swahili people, and blue the country's many lakes and rivers, as well as the Indian Ocean.olors. Tanzania Flag-Colors meaning. green represents the natural vegetation of the country, gold its rich mineral deposits, black the native Swahili people, and blue the country's many lakes and rivers, as well as the Indian Ocean.