1. Starter Your friend gives you a solid object that is a rectangular solid. Explain how you could determine the density of the material. Your friend gives you a solid object that is a rectangular solid. Explain how you could determine the density of the material. Density Lab

2. Practice Design an experiment to determine the density of three different materials: A wooden block, a cylindrical solid, and water. You have a triple beam balance, a meter stick, and a graduated cylinder that you may use. Design an experiment to determine the density of three different materials: A wooden block, a cylindrical solid, and water. You have a triple beam balance, a meter stick, and a graduated cylinder that you may use. Questions: 1. Which of your samples would float in water, and which would sink? Explain how you know this. 2. Calculate the density of the Earth. Show ALL your work. ( Volume of a sphere = 4/3 π r 3 Earth’s Diameter: = 12,718,000 m Mass: = 6.00 x 10 24 kg )

3. Wood Block TrialLength (cm) Width (cm) Thicknes s (cm) Mass (grams) 1 2 3 Average Volume = average length x average width X average Thickness Experimental Density = average mass / volume Volume (cm 3 ) Experimental Density (g/cm 3 ) Accepted Density (g/cm3) Percent Error. 500

4. Water TrialVolume (ml)Mass (grams) 1 2 3 Averages Experimental Density = average mass / average volume Experimental Density (g/cm 3 )Accepted Density (g/cm3) Percent Error 1.000

5. Cylindrical Solid TrialLength (cm)Diameter (cm)Mass (grams) 1 2 3 Averages Volume (cm 3 ) Experimental Density (g/cm 3 ) Accepted Density (g/cm3) Percent Error Volume =  (average diameter/2) 2 x (average Length) Experimental Density = average mass / volume

6. Lab Report Checklist 1.Starter 2.Data tables 3.8 Calculations ( 2 volumes, 3 densities, 3% errors) 4.Questions (2) 5.Summary ( with objective, procedure, results, and reasons for error.)