Volumes of Irregular Objects Lab Volume is a measurement of the amount of space something occupies. Using the metric system, scientists measure volumes in liters, kiloliters and milliliters and cubic centimeters. We can also use graduated cylinders to measure the volume of some solids by placing the solid under water. An example would be by placing a small rock into a graduated cylinder containing 2.0mL of water the water level rises to 4.3ml. The volume of the rock must be 2.3mL (calculated by subtracting 4.3-2.0=2.3). This method is only useful for objects that sink and don’t dissolve and is called liquid displacement. Lab Procedure 1. 2. 3. 4. 5. 6. Fill the graduated cylinder with enough water to cover the object you will be measuring. Read the volume. Remember to make the estimate by reading in between the lines. Record in your data table. Remember to record the units. Tilt the cylinder and gently slide the object into the water. Do not let the water splash. Record the volume of the water and object together. Subtract to get the volume of the object. Data Table Object Volume of Water Volume of Water + Object Volume of Object Lab Wrap Up Questions Define volume. What units of measurement we will use for volume of solids in this class? What units of measurement we will use for volume of liquids in this class? What are some metric prefixes? Why is volume measured to 2 decimal places more precise than rounded to a whole number? How can you find the volume of a liquid?