Materials: Triple-beam balance graduated cylinder Water rock samples of granite, basalt and slate Sample of iron (Fe) Hypothesis - _____________________________________________________________ Procedure: SAMPLE Volume of rock Volume of Volume of MASS Density & water water alone rock alone (g) (g/cm3) Granite Basalt Slate Iron CLASS DATA g/cm3 g/cm3 g/cm3 AVERAGE DENSITY DENSITY DENSITY GROUP OF ROCKS OF IRON OF EARTH ...