When the Klutz company approached us about contributing to their new Boom, Splat Kablooey book, we were really excited to start research on a brand new device to be used with our original Geyser Tube™ creation. If you’ve ever used our Geyser Tube, you’ve probably experienced the fun and exciting learning that can happen when you combine Diet Coke and Mentos. But, now, you can use anything you can imagine to see what makes the best geyser. Get ready, because your fun with geysers has just begun. We’ll give you the original Geyser Tube, two of our new Geyser Tube Depth Charges and even a little rock salt to get your experimenting started. All you have to provide is a few household materials and a lot of imagination! Recommended for children ages 4 and up.
- 2 Soda Geyser Depth Charges
- Steve Spangler’s Original Geyser Tube
- Roll of Mentos
- 50 grams of Rock Salt
How does it work?
Soda geysers are powered by fizzy carbon dioxide gas dissolved in the soda. The trick is to make the bubbles collect at the bottom of the bottle and “push” the soda out the top. Rock salt and Mentos work as “geyser starters” because each grain of salt and each Mentos has thousands of tiny pits all over the surface. These tiny pits are called nucleation sites – perfect places for carbon dioxide bubbles to form. Now add the Depth Charge... it is weighted so that it quickly sinks to the bottom of the bottle and quickly disperses your geyser starter.
What does it teach?
Science Fair Connection:
- Try different brands or types of soda and find a way to measure which erupts the highest.
- Test different geyser starters to find which starter material creates the tallest geyser.
- Find out what temperature is best for geyser eruptions.
Boom Splat Kablooey
September 29th, 2009
Click the thumbnail below to see the video.
Mark tx - October 2, 2009
salt sorta works