Density Rod, 0.65" Dia. X 3.5" Long, 1 Each

United Scientific® Density Rod by United Scientific is a machined aluminum cylinder, 0.65 in. in diameter and 3.5 in. long, that floats in cold water but sinks in warm water. The behavior gives students a clear, visible link between water temperature and density, and an activity guide is included. It is an economical tool for classroom demonstrations on density and buoyancy in physical science, physics, and earth science lessons.