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 flag of Ghana. The color Red commemorates those who died or worked for the country's independence ; The color Gold was influenced by the mineral rich nature of Ghana lands ; The color Green was chosen because Ghana lies in the tropics and is blessed with rich vegetation. Then the five pointed lone star which is the symbol of African emancipation and unity in the struggle against. colonialism. The coat of arms. The coat of arms of Ghana was introduced on 4 March 1957 by Elizabeth II.