Click here to download the catalog as a PDF file. To view this site you need Adobe Flash Player and your browser must allow javaScripts. Go here to get the latest Flash Player. Energy h w ! m a Colliding Steel Spheres A Smashing Demonstration of Energy Transformation! Finally, a way to see how energy “loss” is dissipated as heat! When these two 1-pound steel spheres are smashed together, the kinetic energy transforms into enough heat to burn a hole in a piece of paper! A dramatic demonstration of energy transformation. Kit contains two 1-pound, 2-inch diameter chrome steel spheres and complete instructions. P6-6070 Colliding Steel Spheres $29.95 Discovery Pack Happy/Unhappy Balls Prove Looks Can Be Deceiving Experiment ideas included! Energy Discovery Pack Understanding types of energy and energy transformation is crucial to meeting teaching standards. This pack includes twelve different demonstrations and demonstrates eight different forms of energy! Radiometer Solar Bag Astro Blaster Newtonian Demonstrator Dynamo Flashlight 4"x 4" CRISTALHEAT® Pack UV Beads P6-6060 $109 Phosphor Glow Paper Happy/Unhappy Balls 2 Dropper Poppers Drinking Bird Instructions & Lesson Ideas Here’s one of our all-time favorites! Side by side, these two black rubber spheres look identical. But, when you throw them to the ground, one bounces wildly about the room while the other just lies there, no matter how hard you throw it. What’s the secret? That’s up to your students to find out! Easy to use and endlessly intriguing Our Happy/Unhappy Balls are great for teaching discrepant event science, polymerization and the coefficients of friction and restitution. Each set comes complete with two 1" balls, information on their physical and chemical properties, plus a ton of fascinating experiments for you and your students to try. P6-1000 $3.95/pr 10 prs. or more $3.75/pr Compound Bar Thin strips of two different metals are laminated together in this simple demonstration. Hold the bar over a flame and watch the bar bend because of the different thermal expansion rates. P6-7070 Compound Bar See the Portable Micro Burner on page 46. $5.95 Dropper Popper! The ultimate “Super Ball” is really only half a ball! The Dropper Popper will spring up like a normal popper, but it also provides a unique demonstration of energy. Turn the popper inside out as usual, then drop it from shoulder height. The extra stored energy will be released on impact, and it will bounce higher than your head! Ask students to identify all the types of energy involved. Instructions and explanation included. P6-6075 Dropper Popper 10 or more 52 Compound Bar Set NEW! $2.50 $2.25 Now take your thermal expansion labs a step further with our set of four different compound bars. Compare the behavior of four combinations: Brass/Aluminum, Brass/Iron, Copper/Iron, and Brass/Copper, and ask students to make conclusions about appropriate applications of each metal. P6-7080 Compound Bar Set $23 1-800-367-6695 Multiple metal combinations turn a simple activity into an advanced learning experience.