A Dropper Popper is more than just half of a rubber ball. This incredible device seemingly defies the laws of physics by bouncing higher than where you dropped it! Requires a small amount of "activation energy" to work. It is molded into a very special shape that allows it to store elastic potential energy and then convert it to kinetic energy with a POP when dropped from a low height. An engaging activity for any physics or chemistry class! 5.7 cm (2.25") diameter.
Have your students experience the difference between gravitational and elastic potential energy. Invert a Dropper Popper, place a ping pong ball inside the cavity, and drop the Popper onto a hard surface with the ping pong ball on top... Be sure to wear goggles and have a high ceiling, or better yet, no ceiling at all! Estimate how high the ball travels. Change the height of the drop and determine if the height the ping pong ball travels is based more on gravitational or elastic potential energy.
Note: Please store your poppers in a cool, dry place in their original (non-activated) shape. If stored in activation mode, the rubber will stretch and the popper's effectiveness will be reduced.
Read more on our Blog - Teaching Energy Using Dropper Poppers
Write a review
Did not work
Aug 2, 2018 | By Erin of Saginaw, MI United States
Owner Response:Sorry Erin, These poppers typically work really well. If you haven't already contacted customer service, please do and we will refund your purchase.
Jan 14, 2018 | By Kathie Iselin of Mount Pleasant, WI United States
Owner Response:Agreed! All outgoing poppers will have this warning. Though safe when used properly, if you position your head over the popper when it releases its energy, it can certainly do damage.
Nov 27, 2016 | By Novella of Springfileds Gardens, NY United States
4th Grade Science
Aug 7, 2016 | By Sandra Craft of Dallas, TX United States
Aug 4, 2015 | By Sarah Rose of Tom Price, AL Australia
Feb 20, 2015 | By Colleen M White of Clarksville, TN United States
Sep 23, 2014 | By Kathryn of Mattapoisett, AL United States
Owner Response:Hi Kathryn, We're sorry you're disappointed with your purchase. On rare occasions the ping pong balls can be damaged in transit. We'll send out a new one today. The poppers are made from thick rubber, and we have, at times, found that kneeding them(bending them in a variety of directions and squeezing) so they are more pliable, loosens them up. If that doesn't work, we are happy to replace or refund your order. Please contact our customer support for any additional help.
Disappointed in Poppers
Sep 21, 2014 | By Kat of Citra, FL United States
Owner Response:That's rather unusual. We have heard that once in a rare while the Dropper Popper is too stiff to pop until it is kneeded and squeezed, but we've never heard of them working and then not working. Of course, we would be happy to exchange your poppers for you and we apologize for your experience. Someone from customer service will contact you immediately!
6th Grade Science Teacher
Sep 2, 2014 | By Denika Gum of Charlottesville, VA United States
Science Fair Administrator
Apr 7, 2014 | By Karen Garza of Spring, TX United States
3-6 Science Teacher
Feb 10, 2013 | By Ron Howerton of Noel, MO United States
Nov 12, 2012 | By Chavone of New York, NY United States
Oct 15, 2012 | By Carla of New City, NY United States
Oct 2, 2012 | By H. Dixon of Miramar, FL United States
Awesome Demo and Lab Activity
May 29, 2012 | By Justin Son of Marlboro, NJ United States
May 22, 2012 | By Margaret Carter of Wapato, WA United States
May 17, 2012 | By Carnold of Bruno, SK Canada
Poppers are fun
May 16, 2012 | By K Wedding of Round Rock, TX United States
Energy laws in action
May 16, 2012 | By Bonnie Yelverton of Fontana, CA United States
May 16, 2012 | By Jeanette Emmerich of Vernon, NJ United States
Middle School/College Methods Teacher
May 3, 2012 | By Margaret Flack of Jasper, IN United States
May 1, 2012 | By Jason L. of Paducah, KY United States
Lovely demo of stored energy
Apr 23, 2012 | By bcolgate of Fairfield, CT United States
These are AWESOME
Apr 23, 2012 | By Barbara of Scottsdale, AZ United States
This product will support your students' understanding of the Next Generation Science Standards (NGSS)*, as shown in the table below.
Suggested Science Idea(s)
Students can use the Dropper Popper to plan and conduct an investigation to compare the effects of different strengths or different directions of pushes and pulls on the motion of an object.
Students can use the Dropper Popper to design, test, and refine a device that converts energy from one form to another.
Students can use the Dropper Popper to plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved.
Students can use the Dropper Popper to construct, use and present arguments or experiments to support the claim that when the motion energy of an object changes, energy is transferred to or from the object.
Students can use the Dropper Popper to develop a model or experiment to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
Students can use the Dropper Popper to design, build, and refine a device that works within given constraints to convert one form of energy into another form of energy.
Using a Dropper Popper in combination with a ping pong ball creates a dramatic demonstration of energy transfer—and much more.
All the NGSS standards are supported with this lesson idea.
* NGSS is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of, and do not endorse, this product.