from the starting point on the terrestrial plane, go to the right and down the stairs to a large platform. the mass of a drop of a liquid is measured by weighing a known number of drops or by counting the number of drops obtained from a given volume of the liquid. we hope that through our pledge you will be inspired to get involved too! a place where they are not grilled about what happens at the other parents home. now, let your digital camera free around water while you are swimming pool, at the beach, it rains. 