# Fast and Easy Science Fair Projects: Space Saver

Balloons
Bucket

## The concept of volume

Purpose: Learn that an object's weight (mass) can remain the same, regardless of it shape.

Overview: Space in landfills, where towns and cities get rid of their trash and garbage, is limited. When things can be compressed so they take up less room, landfill space is preserved.

The volume of an object is a measure of how much space it takes up. Tin cans and aluminium soda cans, those that are not returned to stores for the deposit, are among the items collected and recycled so the metal can be reused. Cans in a recycling truck can take up a lot of room. If they were crushed, they would have far less volume, so they would take up much less space. but, they would still weigh the same.

Hypothesis: Objects can be made to have less volume but still keep the same mass.

You need:

• Balloons
• Bucket

Procedure: Instead of crushing soda cans to demonstrate volume, we'll use balloons. Inflate some, making each balloon about the size of a soda can. In a bucket, put in as many balloons as you can fit.

Now, take the balloons out of the bucket and lay them on a table. Count them. Lay the same number of uninflated balloons next to them. Compare the difference in the volume of the uninflated balloons to the inflated balloons - much different, right? - yet both weigh about the same. (Since air actually has some weight, the inflated balloons do weigh more, but the amount is negligible - not an important, easily measured, difference.)

Results and Conclusion: Write down the results of your experiment. Come to a conclusion as to whether or not your hypothesis was correct.

Something more: 1. Quantify the volume by how much water can be stored in a balloon. Does each balloon hold one quart? Buckets are usually sold by the number of quarts they can hold. Does a 12-quart bucket hold 12 quart-filled water balloons?

2. How many uninflated balloons can be put inside one balloon?

## More by this Author

Rhonda Waits 5 years ago from The Emerald Coast

Great hub and a cool project. Enjoyed it. It looks real easy to do,thanks for sharing it with us.

Sweet wishes Rhonda

Don Ship 5 years ago Author

Thanks a ton, Rhonda, and you're welcome indeed!

Genna East 5 years ago from Massachusetts, USA

I only wish I had info like this when my son was younger. Great hub.

Don Ship 5 years ago Author

Thanks a bunch, Genna! =)