Assignment: students will be in groups of 4. Each group will be responsible for building a "catapult." Each person will also create a webpage that deals with the technology of weapons. Part 1. Ancient Military Technology: Siege Engines Types of Catapults: Tension-powered-Ballista Torsion-Powered-Onager Gravity-powered-Trebuchet Here are some links to pages devoted to Balllista, Trebuchets, and Onagers. Trebuchet.com Realm of Taergerasmob History of Siege Engines Onager Online Baby ballista Ripcord Trebuchet store Nova: Siege Engines See some in Action! Siege Engines of All Types! Siege Engine.com trebuchet physics Small Siege engines Siege engine blueprints In this challenge you will construct a working model of a catapult. The catapult is an early technology that developed as a spin-off of the bow and arrow. The term "Katapulto" was created by adding the term "kata," meaning downward, and "pultos," meaning a type of small shield carried by Greek soldiers. These two terms together meant "shield smasher in warfare." The term has evolved over centuries and languages into the word "catapult" as we use it today. Around 397 B.C., catapults began to be developed on the principle of tension. Tension- powered catapults operate in a manner similar to that of the crossbow. Later catapults were developed upon the principles of torsion. Torsion-powered catapults were powered by stored energy with twisted hair or ropes. The final stage of catapult development was that of the gravity-powered catapult. Some gravity-powered catapults could launch a 500-lb object up to a distance of nearly 1/4 mile! All of these weapons operated upon the dynamics of potential and kinetic energy. Rules & limitations for all "catapults" : You may bring in materials from outside of class, however, they must be approved by the instructor. Catapult must have a locking/release mechanism No human muscle power can be used to help propel the object Your team must decide on which "challenge" they will attempt: Challenges (pick one): #1-Build a "ballista" that can shoot missiles (bolts) at a target from 15 ft. Your ballista must be able to fire 10 times in 2 minutes. No structural member can exceed 12" except for the "runway," which can be no longer than 24. #2-Build an "Onager" that can hit a target from 25 ft. Your Onager must be able to fire 10 times in 5 minutes. No structural member can exceed 16". #3-Build a "Trebuchet" that can hit a "castle wall" from 50 ft. Your Trebuchet must be able to fire 10 times in 10 minutes. No structural member can exceed 24", except for the "throwing arm," which can be no larger than 36". Part 2. Website create a page for the Web Pick from the topics below: Chemical Weapons Biological Weapons Nuclear Weapons Military Submarines The Military Tank Aircraft Carriers Military Helicopters Military Aircraft

1st Hour 2nd Hour 3rd Hour 4th HourM 5th Hour 6th Hour Take the Dr. Strangelove/Spies Above Quiz