Volume, Mass and Density

A Supplementary Activity for Students


Part I: Volume

An updated version of this page is available containing the complete mass- volume- density module (including an online test assessment, and ideas for science projects) --



What will happen when the metal block is slowly lowered into the water? Click on the image and find out if you are correct.

Is the volume of water displaced equal to the volume of the object?

Let's find out.

Step I: The volume of the cube

Hint: V=s^3 or V= side x side x side What is the volume of the cube (in cubic cm.) that was lowered into the graduated cylinder?

Round off your answer to the closest tenth, then submit your answer to see if you are correct.

The volume of the cube in cubic centimeters is: cm.3
What would be the volume in cubic inches? in. 3
Need help converting from centimeters to inches? Use a

Step 2: The Volume of displaced water

What was the amount of water displaced by the object? Click on each picture for a closer look!

Before After
The volume to the closest cm. is: ml.
Step 3: Compare your results

Take a look at your values for the volume of the cube and the volume of displaced water. Although the values may be close, are they exactly the same?

What are some reasons to account for the small differences in using the two methods to calculate volume?

Click here to find the mass of the cube