MTTC 103 Elementary Practice Exam 2025 – All-in-One Guide for Comprehensive Exam Success

To determine the density of a bone, a graduated cylinder and an electronic scale are essential pieces of equipment. The electronic scale is used to measure the mass of the bone accurately. Density is calculated by dividing the mass of the bone (obtained from the electronic scale) by its volume.

The graduated cylinder serves to measure the volume of water displaced by the bone when it is submerged, an application of Archimedes' principle. When the bone is placed in the graduated cylinder filled with water, the amount of water that rises indicates the volume of the bone. Once both the mass and volume of the bone are known, you can calculate its density using the formula:

Density = Mass / Volume.

This method is effective because it allows for precise measurements, essential for determining density accurately. Other combinations of tools listed would not provide the necessary measurements to arrive at a density calculation. For instance, using just a thermometer, ruler, or a petri dish cannot yield valid density results without the mass and volume measurements provided by the correct tools.