This helps you aim the cotton ball forward. They will experiment with the catapult by launching mini pumpkins and trying to launch the pumpkin the farthest. Pushing your six sticks the other direction creates a greater angle between the launching stick and the base. Using Activity 1 Worksheet 1: Pumpkin Catapult Challenge Design students will design and build prototypes of pumpkin catapults to launch mini pumpkins, using popsicle sticks and other supplies. Great resources include: TeachEngineering, Science Behind Catapults, and Pumpkin Chunkin Video. Discuss what are the basic features of a catapult. Have your kids dig up a little history and research when the first catapults were invented and used Hint: check out the 17th century More Fun Catapult Ideas. The best way to set-up the activity is to show pictures and videos of various catapult designs. A catapult is a simple machine that has been around for ages. This results in a cotton ball aimed more upward than forward. When you release the stick, all that potential energy is released into energy in motion, producing the projectile motion. See more ideas about catapult, catapult project, pumpkin chunkin. Moving the stack of six sticks closer to the launching cup makes the launching stick lie flatter. Explore Tash Solangis board 'Catapults', followed by 267 people on Pinterest. In the case of your catapult, the cotton ball probably flew higher and farther. Bending farther means more energy gets stored in the stick, and when you let go, all this stored energy is converted into energy of motion, so the cotton ball flies through the air at a higher speed. To get started making your pumpkin from popsicle sticks, start by grabbing all your supplies. Maybe you felt you needed to exert more force or work harder to bend the stick farther. Pushing the stick down farther takes more effort from you. Most of this energy transfers to the cotton ball, which shoots through the air. When you let go, this energy is released and converted to energy of motion. Stack the craft stick with the bottle cap on it with another plain craft stick and secure at one end with a rubber band. When you bend your stick, you load your launching stick up with energy. (You can do this after assembling if you are using the glue gun). Do you get similar results each time? Is what you observe what you expected? Can you explain why?ĭid you see your cotton ball fly higher and farther when you pushed you launching stick farther down?
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