SCIENCE, MECHANICS & ENGINEERING - DEPARTMENT 22
401.1 - AEROSPACE
Flyable model built from a kit or original design.
401.2 - AEROSPACE
Educational display or other type of exhibit showing an aerospace idea such as forces involved in flying, model rocket photography, safety in flying model rockets or
airplanes, test for rocket stability, etc.; may include scale models or kits to illustrate a concept.
421.1 - AUTOMOTIVE
Repaired or restored vehicle
421.2 - AUTOMOTIVE
Educational display or other type of exhibit showing an automotive idea such as safe operation, maintenance plan, comparison shopping, principles of systems operations such as electrical, braking, air bags, etc.
611 - ELECTRIC/ELECTRONICS
Constructed or repaired article or educational display or other type of exhibit showing an electric or electronic idea such as safety, construction techniques, lighting effects, electrical energy sources, etc.
451 - SMALL ENGINE
Repaired or restored operating engine or educational display or other type of exhibit showing a small engine idea such as maintenance, function of parts, comparisons, etc.
441.1 - TRACTOR
Repaired or restored tractor
441.2 - TRACTOR
Educational display or other type of exhibit related to tractor showing an idea such as safe operation, maintenance plan, engine components, operation costs, principles of engine operation, safety hazards, etc.
411 - WELDING
Constructed article or educational display related to welding showing an idea such as safety, types of welds, comparisons of welds, etc.
461.1 - WOODWORKING
New constructed and finished article.
461.2 - WOODWORKING
Educational display or other type of exhibit showing a woodworking idea such as type of woods, wood finishes, safety precautions, tools and proper use, wood fasteners, woodworking skills and techniques, etc.
893 - SCIENCE & TECHNOLOGY
Educational display or other type of exhibits showing how science and math help us understand the world. May include constructed article, posters, portfolios, notebooks, etc., to show and explain what was learned.
601 - OTHER SCIENCE, MECHANICS & ENGINEERING IDEAS
Any other exhibit, which is an outgrowth of a 4-H Science, mechanics and engineering project or educational experience that does not fit any previous classes listed.