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..
The Pan-African flag â also known as the UNIA flag, Afro-American flag and Black Liberation Flag â is a tri-color flag consisting of three equal horizontal bands of (from top down) red, black and green.ariations of the flag can and have been used in various countries and territories in Africa and the Americas to represent Pan-Africanist ideologies. Several Pan-African organizations and movements have often employed the emblematic tri-color scheme in various contexts.