by Liz LaRosa
click here for a pdf version
to determine the volume of a regular object using the formula: length x width x height
to define the term "meniscus"
to read a graduated cylinder using the meniscus
to determine the volume of an irregular object using water displacement
A variety of materials such as blocks of wood, marbles, paper clips, box of tissues, etc, set up around the room at stations
There are numbered stations around the room.
You will be assigned a station to start at
At the station you will find the volume of the object(s) at that station using one of the methods we have discussed in class.
Record your results in Table 1.
Do NOT proceed to the next station until it is time to rotate.
Formula for regular volume: L x W x H = cm3
Formula for Irregular Volume: Ending Volume - Starting Volume = Volume of object in mL
Table 1: Volume of regular and irregular objects
|Object||Volume: cm3 or mL||Object||Volume: cm3 or mL||Object||Volume: cm3 or mL|
Conclusion: 2-3 sentences demonstrating what you learned in this lab.
At the irregular volume lab stations, place the graduated cylinder, 2 objects to find the volume for, a beaker of colored water using food coloring (makes reading the mL easier), a plastic spoon, and a rubber stopper on a tray.
Place the rubber stopper inside the graduated cylinder so it is at the bottom of the cylinder. The rubber stopper prevents the graduated cylinder from cracking when objects are placed in (rocks, marbles, metal bars, nails, etc).
Use the plastic spoon to stop the heavy objects from falling out of the graduated cylinder when they pour the water out and back into the beaker. The heavy objects will crack the beaker if it is simply "dumped" into the beaker.
Keeping all the materials on the tray will keep water from getting all over the place, esp if something does end up cracking by accident!