See: Junk Yard Challenge Trial Event (Division B and C) GENERAL RULES
TEAM Size: 2
Junk Box -- Box can be a standard 10 ream paper boxwith lid (26cm X 31cm X 46cm
Suggested Supplies & QuantitiesTo Put In Your Box:
dowel rod (2’ cut), pencils (4), straws (20), wooden craft sticks (20), pipe cleaners (20), index cards (5), pieces of paper (5), plastic grocery bags (2), paper grocery bag (2),tissue paper (2),
newspaper (2), masking tape, string or yarn, fishing line, thread, needle, brads,paper clips,
whatever else fits into your box with the lid on. Pre-glued pieces are allowed
Materials considered unsafe will not be allowed. When there is doubt, do not bring the material. Acids, bases, razor blades, flammable liquids are not permitted. No glue is permitted.
Provided Supplies practice eggs (hard boiled), grade A large eggs (raw), rubber bands for egg
safety belt , pieces of egg carton for egg sling (can not be modified), drop zone target, plumb
line, ladder, scale
Remember Your Tool Box: no extra building materials, no glue, include at least one big needle. Bring Safety Spectacles with Side Shields.
Time Allowed for Building - 30 minutes including tests. Judging will take approx. 10-15
minutes. 5 minutes for repair/adjustments allowed. No major remodeling will be allowed.
Chimacum Invitational Junkyard Challenge
Parachute Target Drop *
Create a parachute that will allow an egg to land safely on a target
Your team will bring a junk box filled with materials that could be used to create a
parachute. Teams may use part or all of the materials in the junk box and are not allowed to
share materials with other teams. All extra materials should be saved in case repairs are needed
Teams will be allowed 30 minutes time to build and test their parachute. Practice eggs
will be provided for testing purposes. Competitors are allowed to bring diagrams to help them
build their parachute. After the time is up, all parachutes will be impounded and no changes will
be allowed except for repairs and adjustments between trial 1 and trial 2.
Your parachute may not be aided by a helping hand or other energy source. Teams will
be provided with an egg seat (a piece of an egg carton) and seat belts ( 2 rubber bands). You will
need to attach the parachute device to the egg seat. Other modifications to the egg seat are not
allowed such as extra padding, materials that cover the egg and seat, or the addition of extra
materials for the purpose of protecting the egg.
Each team will be allowed 5 minutes to load the egg into the egg seat and prepare the
parachute. Each team will choose and egg for each trial and load the egg into its seat before
proceeding to the drop zone. Each team will be allowed two trials with 5 minutes allowed
between trials for repairs and adjustments using materials left over from construction.
One team member will drop the parachute from a ladder at the height determined by the
challenge proctor. The entire device (egg and parachute) must begin above the drop line. A
plumb line will be available to help you line up your device, but must be removed before the
The goal of the contest is to have the egg land and remain on the center of the target
without the egg breaking. If the egg does not leave a wet mark on a paper towel, it is considered
unbroken! If the egg remains uncracked,, the team will receive a 10 point bonus.
The score will be determined by measuring the distance between the furthest edge (or
part) of the device and the denter of the target. The best result (smallest distance) out of the two
trials will be considered for final results. The lightest parachute (without the egg) will win in the
case of a tie.
Sample Score Sheet
Parachute Target Drop
mass of parachute=________
Distance: trial 1___________ trial 2 ________________
*modified from S. Baker & T. Trimpe 2001