Solar Bag Fill our Solar Bag with air and let solar energy make it float email to friend
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We guarantee you have never seen a Solar Bag like this! Our Solar Bag measures 15 meters (50 ft) long and 74 cm (29 in) in diameter. The thin, black plastic bag holds over 60 cubic meters (200 cubic ft) of air. Simply fill with air by running, tie off the ends, and let the solar energy of the sun heat the air inside the bag. Within minutes, the bag rises to the sky and floats like a giant science tube. Better tie it down or you'll be flying as well! Includes a complete science activity guide. Recommended for children ages 8 and up.

What's included?

• 15 meter (50 ft) long Solar Bag
• Activity guide with student worksheets

 

NOTE : Solar Bag String NOT included

How does it work?

After rolling out the bag and tying one of the ends, you have to run around and fill the bag with air. Once it is full, tie the other end so that air can’t escape and watch the power of the sun at work! The solar energy will heat up the air inside the bag causing the molecules to move around and bump into all sides of the solar bag and make it rise! This is a perfect experiment to learn about the properties of air, buoyancy and convection. It's amazing science at work!

What does it teach?

Learn about the properties of air and air pressure. Discover the science behind density and buoyancy and how they are affected by heat.

Product FAQ

• How much weight will it lift off the ground?
  The solar bag is not intended to lift any weight while it rises.

• How high can it float?
  The sky’s the limit on this one. We have let a solar bag or two go and its been observed by satellites at over 120,000 feet in the air!! This is the main reason that it is best to have some string attached so that you can inflate it, watch it float, and bring it back in order to use it time and time again.

• Does it have to be a hot day?
  The best environment for the solar bag activity is to have the sun shining with a cool temperature. You want the air inside of the bag to be able to heat up from where it originally was so that it can rise.