Div C – High School
NC Essential Standards Alignment:
Science as Inquiry
See the National rule manual
Event Score Sheet:
National Event Page:
All participants must properly wear eye protection at all times. Participants without proper eye protection must be immediately informed and given a chance to obtain eye protection if time allows. Participants without eye protection will not compete. Each device must pass a safety inspection before operation.
10/5/18 (Division C) 4.b.iv. should read, edits in bold: Add water to a container to raise a standard, unmodified golf ball located in the same container at least 5 cm so that the golf ball rolls out of the top of the container and initiates the next action.
This is a building event. Prior to the competition teams will design and build a Rube Goldberg type device that starts in a specified way (dropping an unaltered Ping-Pong ball into the device, causing a standard, unmodified golf ball to move) and ends in a specified way (the device must raise a perfectly square platform that is between 5.0-10.0 cm on each side, a vertical distance of at least 20.0 cm before it becomes the highest point of the device). Additional points are earned for intervening energy transfers as outlined in the rules.
These devices will not be impounded at regionals, but will be impounded at States.
All participants must properly wear eye protection at all times. Participants without proper eye protection must be immediately informed and given a chance to obtain eye protection if time allows. Participants without eye protection will not compete. Each device must pass a safety inspection before operation. Devices with potential hazards or safety concerns will not be permitted to run unless safety concerns are resolved to the satisfaction of the Event Supervisor; otherwise, they must receive only participation points. Event Supervisors will need meter sticks, stopwatches, balance/scale, and measuring tape.
High score wins. Points are earned for completing action sequences and bonuses as outlined in the rules.
Measure, measure, measure. Pieces sticking out around the back or sides of your device count in the size.
Chemical reactions, and electronics don’t always always go well together. Be sure that individual components are safe to operate near each other.
In NC, we highly recommend that you do not try task 4 vi unless you have exhausted all the other points possible. There are very very few reactions where light will start a chemical reaction that can initiate something else. Just a suggestion.
There have been several questions about the ‘closed container’ for water. The container does not have to be fully enclosed. The top can be open but if any water spills it will not be considered to be closed and will not count.
Mission Possible -Timer Scoring
To receive any points for a successful designated timer, it must run for at least 30 seconds.
The designated timer must also successfully initiate the next action/task.
The final task must be successfully completed by the device for any timer points to be awarded.
One point will be awarded for each full second that a timer runs up to the target time if all conditions above and those in rules are met (i.e. no electricity is used). No timer points will be awarded after the target time. (Two points will be awarded if the timer is chemical.)
- A qualifying timer starts at the 20-sec. mark and runs until the final task is completed at 65 seconds. The timer ran for 40 seconds prior to the target time of 60 seconds, so 40 points would be awarded.
- A qualifying timer starts at the 50-sec. mark and runs until the final task is completed at 81 seconds. Only 10 points would be awarded for the time up to the target time.
- A timer starts at 62 seconds and runs for 25 seconds until the final task is completed. No points will be awarded because the timer did not run for 30 seconds and all of the time it did run were after the target time.
Want to get inspired? Check out this Honda Commercial, called “The Cog” that uses parts from a Honda to create a Rube Goldberg device. There was no camera trickery or editing involved, it took over 600 takes to film. It’s fantastic!
Making a base out of a cardboard box – a simple way to start, improve from here with size or materials.
Attaching things to the walls of a box with zip ties.
How to make an electromagnet.
How to make a switch.