- Wooden base
- "Floating" wooden board
- Two 8.5" wooden rods
- 105 nails
- 20 - 11" balloons
How does it work?
The Bed of Nails kit and its balloon popping, mind bending experiments work using scientific principles of surface area and pressure. By varying the number of nails and/or the air inside the balloon, the amount of pressure needed to puncture the balloon will change.
What does it teach?
Science Fair Connection:
Sure, the Bed of Nails kit is a great way to demonstrate surface area, pressure, and more. (Who doesn't like the moment the balloon goes POP!?!) While it's a great demonstration, the Bed of Nails needs to have a variable, or a factor that can be changed, before it makes a great science fair project. We give you a great example right in your activity guide:
- Try testing how many nails, or what patterns, you need to prevent a balloon from popping. Find a way to measure the different amounts of pressure needed to pop the balloon.
That's just one example of a variable that you could test, but don't let us hold you back. If you can think of other variables, give them a try. Just remember, while you change a variable for every experiment, make sure to keep all the other factors in your experiment the same.
Bed of Nails
January 14th, 2008
Click the thumbnail below to see the video.
April - October 16, 2012
This is really fun. The one thing I will add is that the description didn't clearly say that the holes are pre-drilled, so although you are getting the kit in peices, it only takes a couple minutes to set up. The instructions even give you experiment ideas to do while setting it up. Very very fun!
Bed of Nails Review
Mary Good - December 16, 2010
I loved this product. Very nice and good service. I will be using this site in the future.