Catapult ProjectCatapult Project

Must have..Must have..

Base- can use a variety of items or set ups Base- can use a variety of items or set ups but all catapults must have a bottom base but all catapults must have a bottom base or support structureor support structure

Lever arm- used to pull back and launch Lever arm- used to pull back and launch the marshmallow, must have something the marshmallow, must have something on lever arm to place marshmallow inon lever arm to place marshmallow in

Latch- something in place so you can pull Latch- something in place so you can pull back and latch the lever armback and latch the lever arm

Energy/power- must have a place for Energy/power- must have a place for energy to come from, examples: rubber energy to come from, examples: rubber bands, springs, other kinds of materialsbands, springs, other kinds of materials

““Stop bar”- must have a bar or some other Stop bar”- must have a bar or some other set up that stops the lever arm so it can set up that stops the lever arm so it can launchlaunch

Must turn in…Must turn in…

Physical Catapult Physical Catapult Conceptual model of your physical Conceptual model of your physical

catapultcatapultList of materials and steps to buildList of materials and steps to buildWriting piece composed of history and Writing piece composed of history and

argumentargument