Mass is the amount of matter an object has. We often use a triple-balance beam to measure mass.

A triple-beam balance gets its name because it has three beams that allow you to move known masses along the beam.

Here is a picture of a triple beam balance. You probably have used one in school. To read more about the triple-beam balances shown above click here

There are also many other types of balances. Scientists need balances that can measure very small amounts of mass.

If you are interested at looking at the many other types of balances click here.

If you are using a triple beam balance in school you might want to brush up on your skills on how to use a triple-beam balance

Now it's time to practice your skills using the triple-beam balance.

Problem 1:

A block is put onto a triple beam balance.

What is the mass of the object?

Click on the picture below and get a closer look at reading the scale after the scale has been balanced. Type your answer in the space provided below, then hit the submit button.

The mass of the object is:


Do you often get confused between mass and weight? Check out the Mass vs. Weight Page
Please continue to Part II .