Question Exhibit Location Type of STEM Represented 1 What is the correct angle for your wings on your paper airplane to be at for maximum flight?

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1 Expo 2017 High School Scavenger Hunt Visit the exhibits to see how many answers you can get! Answers will be available online at uwplatt.edu/expo on Monday, April 10. Question Exhibit Location Type of STEM Represented 1 What is the correct angle for your wings on your paper airplane to be at for maximum flight? 107 General Engineering 90 degrees 2 What three considerations are used when designing a bridge? 115 Constructability (how easily it can be put together), low weight (least amount of materials as possible), and how much weight the bridge can support. 3 What is the most common application of an FPGA? 116 FPGAs are commonly used to prototype embedded controllers, since they can be reprogrammed. 4 What programing language is used by the FIRST team? C++, Labview, or Java 137 General Engineering, Computer Science, Math 5 Is just the ball on the rails considered stable? 207 No 6 When analyzing the path of a projectile, can you separate the x and y components of its motion? Yes 230 Engineering Physics,, 7 When a person turns a bicycle wheel while sitting on a rotating chair, the person turns. Why is this? 233 Engineering Physics Any change in a system must obey the conservation of angular momentum, so any change within the system must be followed by an equal and opposite change 8 What was the cause for the injection molding machine to be invented? To make billiard balls out of a material other than Ivory. 233

2 9 Standardize is one of the 5-S concepts to improve the housekeeping of your workshops and the rest of your premises. Define standardize. 331 Industrial Engineering Standardize: Setting up standards for a neat, clean, workplace. It is the process of standardization of best practices through visual management (written documents, place photos on the walls,and clear signs). Standardize makes abnormalities visible to management and makes it easy for everyone to identify the state of normal or abnormal conditions. 10 What is the difference between a battery and a fuel cell? A battery eventually dies, but a fuel cell continually recharges itself What properties of the concrete allow it to float? Lower Lobby Unit weight and buoyancy, Sustainable and Renewable Energy Systems 12 A spinning sphere or cylinder that is subjected to an airflow exhibits a side force on the surface due to the airstream around the object. This force is known as the effect. Ottensman 001 & What is an antinode? What happens to the flames at an antinode? Ottensman 004 When a peak of one wave matches the valley of another wave traveling in the opposite direction. The flames get higher at an antinode. 14 What is the best option to get high volumes of leftturning vehicles through an intersection? Protected Left Turn Phase Ottensman A Cartesian diver will sink when pressure is applied and float when pressure is removed. What causes this to occur? Ottensman 042 Engineering Physics The diver starts at neutral buoyancy which is when the density of an object is equivalent to the density of the surrounding liquid. Pressure on the outer system (bottle) increases pressure on the inner system (diver/pipette) which causes the density of the diver to incease and, therefore, displace less water within the diver and makes the diver sink. 16 Explain how viscosity relates to selecting materials in Ottensman 044 the design of a road. When designing a road, selecting materials that can withstand the load the road is expected to undergo is very important. It is also important to consider buckling and cracking due to freezing and thawing. Asphalt has a lower viscosity than concrete and will therefore not crack as readily as concrete. However, concrete is often used in roadways. To make up for its high viscosity and brittle behavior, joints are included. This allows for expansion and contraction of the materials.

3 17 List several methods of water treatment. Ottensman 045, Natural Methods wetlands, storm water detention pond; Other Methods - Water Treatment Plant (Coagulation/Flocculation, Sedimentation, Filtration all within detention tanks) 18 What are the five important steps required to successfully pour a concrete floor slab? Placing Rebar, Pouring Concrete, Finishing Concrete, Curing Ottensman 049 East, 19 What is a method for preventing liquefaction in the ground under structures? Sand compaction pile Ottensman How do you find resistance using volts and current? Ottensman 101 Take volts divided by current. 21 In what area of physics does the work of Sophie Germain apply? And what are the areas that the sand stops moving on the Chladni plate called? Wave dynamics and modes Ottensman 103, Engineering Physics, 22 What is the proper clip procedure when turning a corner? Ottensman 105 Unclip one carabiner at a time so that you're secured at all times. 23 What is the place called where multiple highways or roadways cross? An interchange 24 What material is widely used in industrial and municipal water treatment facilities? Granular Activated Carbon and Sand Filters Ottensman 106 Ottensman What property causes the water and oil to separate? Ottensman 112 Chemistry They have different densities 26 What kinds of qualities do buildings need to have in order to withstand wind forces? Ottensman 116 Engineers design tall buildings to resist wind by having larger bases, aerodynamic shapes, and a flexible structure. 27 What two reactants are used to create slime? Ottensman 122 Chemistry Borax and Poly Vinyl Alcohol 28 Which is more expensive: lightweight concrete or normal concrete? Why? Lightweight because of material prices Ottensman 124

4 29 involves designing and manufacturing anything from small objects to large systems. How does this project relate to Mechanical Engineering? Ottensman 126 It helps understand how forces interact to achieve a desired outcome by designing their own catapult and successfully solving problems. 30 What is a game engine? Ottensman 127 Software Engineering, Computer Science A game engine is an application that provides game developers with all the tools they need to combine game assets into the awesome games we play today! 31 What is the product formed during the hydrogen and oxygen balloon combustion reaction H2O (water) Ottensman 144 Chemistry 32 What are the names of the teams that are part of SAE? Ottensman Atrium East General Engineering Clean Snowmobile Team, Baja Team, Formula Team & Aero Team 33 How does a parachute work? Ottensman Atrium West Engineering Physics Gravity causes the parachute to fall, however the air resistance under the chute is so great, because the air molecules get stuck, that the force of the air resistance counterbalances the weight of the object attached to the parachute. Thus, the parachute and object that it is attached to fall at a steady speed. 34 Does the displayed truck have an Open Center or Closed Center hydraulic system? Can you explain the difference? Parking Lot 11 The displayed truck has a Closed Center Hydraulic system, also called Load Sensing system. 35 How would the cosine effect impact an Officer s ability to accurately detect the speed of vehicle with a radar unit? (i.e. what speed measurement will be more accurate -one taken with the target vehicle traveling straight away from or directly at the Officer versus a measurement taken with the target vehicle perpendicular to the Officer?) Parking Lot 11 The best measurement will be taken on a target vehicle which is traveling straight at or directly away from the Officer. A measurement taken at a 90 degree angle would basically yield a measurement that the vehicle was stationary. Our rule of thumb is that the cosine effect always benefits the speeder in that the

5 closer the angle of speed measurement is to 90 degrees, the slower the measured speed of the target vehicle will appear to be.