Here are a few ideas for making a mini-stomp rocket called a PUFF ROCKET that uses something other than your lungs to get your rocket launched.
When you do this experiment, think about which kind of bottles will work the best. And does straw length matter? In our testing, we had one rocket that cleared 25 feet!
1. Grab a clean, empty shampoo or lotion bottle. Make sure the bottle you choose gives you a good puff of air out the top cap when you squeeze it. You’ll also need two straws, one slightly smaller than the other. And a small piece of foam. 2. Insert the smaller straw into the hole in the cap. If you have trouble, ream out the hole or just take off the cap and seal the connection with a lump of clay or a lot of hot glue. Insert a small bit of foam into one end of the larger straw. Slide the larger straw (your rocket) onto the smaller straw (your launcher). 3. Squeeze the bottle hard! POOF! [/am4show]
- clean lotion bottle or shampoo bottle
- larger straw that fits onto a smaller straw
- small piece of foam that fits snugly into the straws
- hot glue gun
1. Grab a clean, empty shampoo or lotion bottle. Make sure the bottle you choose gives you a good puff of air out the top cap when you squeeze it. You’ll also need two straws, one slightly smaller than the other. And a small piece of foam. 2. Insert the smaller straw into the hole in the cap. If you have trouble, ream out the hole or just take off the cap and seal the connection with a lump of clay or a lot of hot glue. Insert a small bit of foam into one end of the larger straw. Slide the larger straw (your rocket) onto the smaller straw (your launcher). 3. Squeeze the bottle hard! POOF! [/am4show]
We had fun making these! Granted there was a bit of wind, but we got ours to fly nearly 37 feet!!! So neat! Thanks!
A ketchup bottle (with flip cap) works great too because it’s very easy to squeeze. Thanks, this was fun!
HK- works good if you put it between your knees and squeeze (we used a dish soap bottle).
From HL- I like it!!!!!