1. Measure the length, width, and height. Record your measurements.

2. Determine the volume of this solid by multiplying these three figures together. Record your results.

3. Determine the volume of one of the small rocks by partially filling the graduated cylinder with water. Record your results. To measure the amount of water, be sure to use the line that comes to the bottom of the meniscus, as shown in the following illustration. Notice the curved blue line. This is called the meniscus. Make your measurement is to the bottom of this line.



4. Carefully put the selected rock into the graduated cylinder, taking care not to splash out any of the water. Record your results.

5. Calculate the volume of the rock by subtracting the volume of the water alone from the volume of the water and the rock. Record your results. Repeat steps 3 through 5 for all the rocks you have selected.

6. Write a brief summary of your findings. Be sure to include all your measurements and calculations.