Presentation on theme: "Mission Possible – Div. C CeAnn Chalker"— Presentation transcript:
1 Mission Possible – Div. C 2009-2010 CeAnn Chalker firstname.lastname@example.org SCIENCE OLYMPIADMission Possible – Div. CCeAnn Chalker
2 What is Mission Possible? Students design, build, test & document a Rube Goldberg-like deviceDevice made of sequence/series of consecutive tasksDevice must run autonomouslySpecific Start and End task
3 Safety Requirements/Inspection Students must wear safety spectacles with side shieldsItems not allowedComputers or digital circuitryRemote controls or timingLiquids (except water)
4 Other Potential Hazards not Allowed Rat trapsModel rocket enginesFireworks, explosives, lightersFlammable substances, matches, candlesUncontrolled projectilesAny other hazardous materials
5 Allowed Items Simple electric DC motors Factory sealed batteries No more than 10.0 volts per any single electrical circuit (no lead-acid batteries)Energy devices may be set/activated prior to starting the device (flashlights & mousetraps, not motors)
6 Requirements Maximum Size of Machine (50 cm x 50 cm x 80 cm) Task Sequence ListTen tasks required to earn maximum points must contribute to the completion of the final taskNo parallel sequence of tasks allowed
7 Requirements – Start Task – Task A Device must be started by:dropping a golf ball from above the devicethat will trigger a mousetrapthat will begin the chain of events leading to the final task
8 Requirements – Final Task – Task J Raise a flagpole:With rectangular school flag (fixed or mobile) that is at least 5 cm x 10 cmThe bottom of the flag must be at least 30 cm higher than all original parts of the device.
9 Other DetailsTasks between the Start Task and Final Task may be in any order.Additional non-listed devices, tasks, and energy sources may be built into the device between the listed tasks but will not earn points.Additional non-listed tasks must contribute to the completion of the final task.
10 8 Other Required Tasks (May be in any order) Activate a photocell providing power to operate a motor.Using a motor, turn a shaft that continuously moves a mass for at least 10 seconds, mass must trigger next action. (extra 10 points for each full sec. over 10 secs., up to 40 secs.)(300 pts. possible)
11 Other Required Tasks cont’d Block a light source, so that it stops powering a photocell which is operating an electromagnet which releases a mass that activates the next step.Use heat generated by the resistance in an electrical wire to melt a mono-filament line in two, so that a mass falls and activates the next step.
12 Other Required Tasks cont’d Use either pneumatics or hydraulics in an enclosed system to operate the next action in the chain.Use any part of the device to raise a golf ball vertically by at least 30 cm.Pop a balloon.Use a motor with a propeller that generates a wind that activates the next step.
13 Task Sequence List Format What is listed? (All tasks in operation sequence)Numbering and Letter Labeling TasksAccuracySequential vs. “dead ends” and “parallel paths”When to turn in TSLHow many copies?
14 Tournament Day Set up Be able to explain device to judges Only 30 mins. Before you plan or are scheduled to run deviceBe able to explain device to judgesGo through TSLRun DeviceRemove from testing location
15 Device Operation - Timing Timing begins when Event Supervisor says, “Go”Student drops golf ball into device to startClock does not stop until maximum time limit of 3 minutesTasks completed after 3 minutes will not be scoredTiming stops when:Device fails to operateOr device completes final taskOr 3 minutes have elapsed
16 Device Operation – Ideal Operation Time The Ideal operation times will be announced after impoundRegional – 60 secondsState – from 60 – 90 secondsNationals – 90 – 120 seconds
17 Device Operation – Penalties Each touch or crossing of the imaginary box is a penaltyStudents may “adjust” device but will receive penalty pointsStalling will lead to DQPoints will not be awarded for task completion when touches or adjustments lead to the task completion
18 Scoring2 pts - for each full second of operation up to the “ideal” time. (max 120 at Regional)100 pts - final task completed in 3 mins.75 pts - Sequence Task List (STL) submitted on time and correct format25 pts - STL 100% accurate documentation of device operations50 pts – no more that 30 min. setup25 pts – each successful required task (max 250)Max. at Regionals – 620 pts.
19 Penalties1 point for each second the device operates over “ideal” time (Max 120 pts)100 pts for each motor running at start100 pts not starting with required 1st Task50 pts, one time, for any object that leaves the boundary of the device (except flag & pole)15 points for each time the device is touched, adjusted, or restartedTier 2 for construction violations, parallel designs or “dead end” paths
20 Things to ConsiderAvoid questionable components that are too complex, too small, or not clearly visibleDevice may not be timed or controlled by any remote method.
21 More Things to Consider Final Task – the team may not complete the task themselves or make adjustments that lead directly to task completion of the next action.Obvious stalling during ”adjustments” to gain time advantage can result in a DQ
22 Costs & Time Commitment Inexpensive available materialsAvoid the “Black Hole” theoryWhere does the money go?Long term project approachIn your Classroom vs. in a student’s garage or basementParent involvement
23 Examples Start Task A & Task B String attached to mousetrap pulls light blockerPreset light source activates photocellPhotocell powers a motorStart Task –Golf ball dropped onto MousetrapLight blockerPhotocellGolf ballStringPreset light sourceMousetrap
24 Examples Tasks E & F Task E – Inside jar monofilament wire heats up and breaksContainer inside jar fallsempties contents into bottom of jarContents mixes with waterTask F –Chemical reaction increases air pressureBalloon inflatesInflated balloon displaces leverMass moves
25 Examples Tasks G & H Task H – Task G – - Inflated balloon is popped. - Weight dropsTask G –String attached toweight goes throughseries of pulleys.String lifts golf ballRising golf ball- activates micro switch for next task.
26 Example Final Task Weights or motors can be used to pull flag up. Hint – have string attached to highest point on the pole, you get more lifting power.Lengths are important, if done by this method, the fulcrum must be higher (not at the base of device) By this method the arm is too long!5 cm (flag size) + 30 cm (above device) + 50 cm (one of max dimensions)= 85 cm (5 cm longer than max device dimension)