To understand the compactness of planetary matter by measuring mass and volume and relating these to density.
steel ball bearings or rods
beaker or cup
"Density Data Chart"
Density is defined as the average mass per unit volume; it is a measure of how much matter is squeezed into a given space. The more closely packed the molecules, the higher the density of the material. In general, planetary bodies in our Solar System are composed of iron, rock, ice, liquids, gases, and in the special case of Earth, organics. This activity focuses on techniques to determine densities of cubes, spheres, or rods of metal, rock, and ice.
Finding Density for a Regular Object
Finding Density for an Irregular Object
This activity has been copied, with permission, from the University of Hawaii's School of Ocean & Earth Science & Technology server to ours, to allow faster access from our Web site. We encourage you to explore the original site.