**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.

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

Because a triple beam balance compares a known mass to an unknown mass it is unaffected by gravity. Unlike a spring scale which really measures weight, the triple beam balance gives a true measure of mass.

Do you often get confused between
mass and weight? **Check
out the Mass vs. Weight Page**

A block is put onto a triple beam balance.

**What
is the mass of the object (to the closest tenth of a gram)?**

Remember to find the mass using a triple beam balance you must add the mass values of each of the three beams.

*Type your answer in the
space provided below, then hit the submit button*.

**The mass of the object is: **

Please enter your answer for Block I in the space provided:

**A
block having the same dimensions is now put on the scale. What is the mass of
this object? **

Please enter your answer for Block II in the space provided:

**If both objects were put on the scale
at the same time their total mass would be** :

Please continue to the next chapter on

Or search for more specific information on Mass -- Density -- Volume

- - -Or return to the **Science
and Math Activity Home Page**

Mass: Learn how to measure the mass of an object using a triple beam balance

Mass vs. Weight: Mass and weight are often confused by many students. Learn the difference and try some challenging problems.

Volume: Measure volume using a graduated cylinder.

Density of a Solid: Learn to calculate the density of an unknown solid from knowing its mass and volume.

Density of a Liquid: Learn to calculate the density of an unknown liquid from knowing its mass and volume using a graduated cylinder and triple beam balance. Learn what a hydrometer is, and what it can do.

Why does ice float? Why does ice float in water?

Density Challenge: Great page for gifted and talented students! Some excellent challenging problems.

Assessment: Twenty questions on mass, volume and density (two levels of difficulty). Your test is marked online.

Science Project Ideas: Ideas for science projects using mass, volume and density concepts learned from this module.

Mass Volume Density Lab Exercise: Problem: What is the relationship between water pressure and depth of water?

An Integrated Math Science and Art (STEAM) Activity- Mass, Volume Density Activity using the Gates Project from Central Park NYC.