Materials for Each Group. 1  9-volt battery. 2  2 wires with alligator clips on both ends. 3  2 pencils sharpened at both ends. 4  Water. 5  Salt. 6  Clear plastic cup. 7  Tape.
Nubian people The Nubians are an ethnic group originally from northern Sudan, and southern Egypt. The Nubian people in Sudan inhabit the region between Wadi Halfa in the north and Al Dabbah in the south.
Nubia - an ancient region of northeastern Africa (southern Egypt and northern Sudan) on the Nile; much of Nubia is now under Lake Nasser Africa - the second largest continent; located to the south of Europe and bordered to the west by the South Atlantic and to the east by the Indian Ocean