NC Essential Standards Alignment:
Science as Inquiry
Event Score Sheet:
Teams will build a device on site capable of protecting an egg when tossed horizontally (clearing a barrier) and landing on the floor.
Teams must bring a box of supplies to build the egg protection device on site. They must also wear safety glasses. Event leaders will provide raw Grade A Large chicken eggs and barriers.
Teams will be placed in tiers according to whether the egg breaks and then ranked by the mass of the device. Lowest mass wins.
Tier 1: Egg Survives the toss.
Tier 2: Egg breaks on the toss.
Tier 3: Devices, regardless of egg breakage, that violate a competition rule.
– If you hold an egg between your palms short ways, when you squeeze it it will break. If you hold it long ways and squeeze, you probably can’t break it. Eggs are stronger long ways, so try to orient it in your device so it will land top or bottom first. This is a great classroom demonstration, but demo it over a trashcan with safety glasses and a trashbag with a neckhole cut in it to be used as an apron just in case your egg has a weak spot.
– The USDA has defined a large chicken egg to be 60 g (+/- 3 g) averaged by the dozen.
– To practice your accuracy without the mess, use a plastic easter egg filled with enough paperclips, clay, or other mass to equal 60g.
– To test if a raw egg will survive impact without the mess, place the egg inside a sandwich baggie before loading it into the device.
– Part of the strategy in this event will be building something that can be easily opened between tosses to check if the egg has survived.
How to Drop an Egg Without Breaking It – Entertainment purposes only, a fun creative thinking activity
Trajeggtory explanation session – 2017 rules
Trajeggtory demo – 2017 rules
Strong Egg, Weak Egg Demo
Eggs have 2 axes (plural of axis, not a tool for chopping down trees), the shorter weaker one, and the longer stronger one. In events with eggs you want to make sure the egg always receives the brunt of the impact on the stronger axis. Try this demo at home to see for yourself, just make sure you’re not standing over good carpet!!
In events that require the protection of an egg, like Trajeggtory, Egg Drop, or Egg-O-Naut, you don’t want to practice with a real egg, that gets messy. Rather, make a fake egg that is the same size and weight as a real one to see how your device performs without having to wash it out each time.