A hovercraft might sound like something out of a science fiction movie, but in reality, it’s pretty easy to build your own! This awesome physics experiment will help your kids explore friction and will look pretty darn cool in the process. Here’s how it works:
What you need:
- A CD or DVD (make sure it’s not one you’d like to use in the future)
- The top of a sports bottle (with a push/pull opening)
- A balloon
- Super glue
What to do:
- With the sports bottle top closed, glue it to the center of the CD or DVD. It should completely cover the hole in the center of the disc. Make sure it is completely sealed.
- Take the balloon and blow it up. Twist the end so that no air comes out, but do not tie the end.
- Stretch the neck of the balloon over the top of the sports bottle top. You want to make sure it’s completely covered.
- Carefully allow the balloon to untwist itself and gently pull the sports bottle top open. Push the CD or DVD slightly and watch as it moves around!
- The balloon will deflate pretty quickly, but you can remove it and blow it back up again to repeat the experiment.