A broad tendency during the 1960s and 1970s toward simple, primary forms. _____________ artists often favored industrial materia
ls (sheet metal, bricks, plywood, fluorescent lights), and their sculptures (shich they preferred to call objects) tended to be set on the floor or attached to the wall rather than placed on a pedestal.
If you were to take a glass and put water a little amount in it there would be more room for the sound to vibrate , but if you put more water then there would be less room for it to vibrate creating a higher pitch.