LEGO Robotics Exam review

Which programming blocks are present in a Line Follow program? a) switch, loop, motor on,motor off switch, loop, motor on,motor off b) switch, wait, motor on, motor off switch, wait, motor on, motor off c) loop, wait, motor on, motor off loop, wait, motor on, motor off d) loop, light, motor on, motor off loop, light, motor on, motor off

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Katrina has a box of 8-tooth gears and a box of 16-tooth gears in her workshop. What combination of these gears on motor and wheel will make the fastest-moving robot on a flat, clean surface, where the robot is not pushing anything? a) The 16 -tooth gears should go on the motors, and drive 16-tooth gears on the wheels. The 16 -tooth gears should go on the motors, and drive 16-tooth gears on the wheels. b) The 16 -tooth gears should go on the motors, and drive 8-tooth gears on the wheels.The 16 -tooth gears should go on the motors, and drive 8-tooth gears on the wheels. c) The 8 -tooth gears should go on the motors, and drive 8-tooth gears on the wheels.The 8 -tooth gears should go on the motors, and drive 8-tooth gears on the wheels. d) The 8 -tooth gears should go on the motors, and drive 16-tooth gears on the wheels.) The 8 -tooth gears should go on the motors, and drive 16-tooth gears on the wheels. b) The 16 -tooth gears should go on the motors, and drive 8-tooth gears on the wheels. c) The 8 -tooth gears should go on the motors, and drive 8-tooth gears on the wheels. d) The 8 -tooth gears should go on the motors, and drive 16-tooth gears on the wheels.

Oops………………… 0 Which moves faster? Try Again..

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How do you calculate the gear ratio? a) Driving gear / Driven gearDriving gear / Driven gear b) Driven gear / Driving gearDriven gear / Driving gear c) Driven gear / motor powerDriven gear / motor power d) Driving gear / number of gearsDriving gear / number of gears

Oops………………… The one on the wheel makes the difference, so it goes on top! Try Again..

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A roller coaster is stopped at the top of a lift hill. It begins to move forward and goes down a 50 foot drop. What kind of energy is present at each portion? a) Kinetic energy  potential energy Kinetic energy  potential energy b) Potential energy  kinetic energyPotential energy  kinetic energy c) Kinetic energy  thermal energy Kinetic energy  thermal energy d) Kinetic energy  chemical energy Kinetic energy  chemical energy

Oops………………… If it is STOPPED at the top of a slope in the beginning, what kind of energy is that? Try Again..

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Which gear ratio means that speed and power are directly controlled by the motors? a) 1 : 1 1 : 1 b) 1 : 2 1 : 2 c) 2 : 1 2 : 1 d) 1 : 3 1 : 3

Oops………………… Think about it…. if a different size wheel changes torque and speed, what arrangement means the motor power stays the same? Try Again..

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If the driving gear has 16 teeth, and the driven gear has 32 teeth, the gear ratio is... a) 1 : 2 1 : 2 b) 2 : 12 : 1 c) d) 5 : 1 5 : 1

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Kinetic energy is the energy of ____________________. a) Sound Sound b) Stored energy Stored energy c) Waves Waves d) Motion Motion

Oops………………… The word kinetic comes from the Greek word for movement. Try Again..

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Potential energy is _____________ energy. a) Sound Sound b) Stored Stored c) Waves Waves d) Motion Motion

Oops………………… Potential means having or showing the capacity to become or develop into something in the future. Try Again..

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Bumpy Doggers is a company that sells Bumper cars. Customers have been complaining that the Bumper cars are slowing down before they hit the other cars, and Bumpy Doggers is looking for a new sensor for their cars, so that they hit the other car harder. Which sensor would be most appropriate? a) Light sensor Light sensor b) Touch sensor Touch sensor c) Ultrasonic sensor Ultrasonic sensor d) Infrared sensor Infrared sensor

Oops………………… 0 en.wikipedia.org Try Again..

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How does the Ultrasonic sensor differ from the Touch sensor when used as an obstacle detector? a ) It needs to physically contact an object to know it was there.It needs to physically contact an object to know it was there. b) It does not need to physically contact an object to know it is there.It does not need to physically contact an object to know it is there. c) It cannot see the object, so needs to use light variations to see if it is there.It cannot see the object, so needs to use light variations to see if it is there. d) The sensors work the same way, so there is no difference.The sensors work the same way, so there is no difference.

Oops………………… 0 Do bats hit cats? Try Again..

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When you have a rubber band that is stretched and tightened, what kind of energy does it have? a) Kinetic Kinetic b) Potential Potential c) Mechanical Mechanical d) Thermal Thermal

Oops………………… 0 Remember your definitions!! Try Again..

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Large heavy robots are needed in an industrial setting where many people work among the robots. Because the people are walking around, a very reliable sensor is needed to make sure that the robots stop before they hit the people. Which of the following sensors would keep the people completely safe? a) Light sensor Light sensor b) Touch sensor Touch sensor c) Ultrasonic sensor Ultrasonic sensor d) None of the above None of the above

Oops………………… 0 Think about it…. 0 Would a light sensor stop the robots from hitting someone? 0 A touch sensor has to touch you – would that be sensible? 0 Ultrasonic sensors have a margin of error – you can’t be sure they will stop in exactly the right place – would you want to take that chance? Try Again..

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Tommy drops a basketball, the ball bounces off of the ground and back into his hands when he catches it. What kind of energy transfer is present? a) Kinetic energy  potential energyKinetic energy  potential energy b) Potential energy  kinetic energyPotential energy  kinetic energy c) Kinetic energy  mechanical energyKinetic energy  mechanical energy d) Kinetic energy  chemical energyKinetic energy  chemical energy

Oops………………… 0 What kind of energy does the bouncing ball have? 0 What kind of energy does it have when it is back in Tommy’s hands? Try Again..

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Why is there a circular loop in the design process for testing and evaluating? a)You do it over and over again without stopping b) Circular loops look awesomeCircular loops look awesome c) Testing and evaluating are essential and must be done multiple times until get it rightTesting and evaluating are essential and must be done multiple times until get it right d) To allow you to redesign and fix any flaws you may have in your original designTo allow you to redesign and fix any flaws you may have in your original design

Oops………………… 0 What kind of energy does the bouncing ball have? 0 What kind of energy does it have when it is back in Tommy’s hands? Try Again..

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In the engineering design process, you must _____________ before you _____________. a) Share your solution; test and evaluate Share your solution; test and evaluate b) Brainstorm; identify the problem Brainstorm; identify the problem c) Brainstorm; design Brainstorm; design d) Design; identify the problemDesign; identify the problem

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What kind of transfer of energy occurs when you push the button to run a program on your robot? a) Kinetic energy  potential energy Kinetic energy  potential energy b) Electrical energy  mechanical energyElectrical energy  mechanical energy c) Mechanical energy  chemical energyMechanical energy  chemical energy d) Chemical energy  potential energyChemical energy  potential energy

Oops………………… Your robot is running off batteries. Try Again..

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Predict what the robot will do when this program is run.. a) Turn until the time is ended then stop Turn until the time is ended then stop b) Turn until the touch sensor is pressed then stop Turn until the touch sensor is pressed then stop c) Move until the time is ended then stop Move until the time is ended then stop d) Move until the touch sensor is pressed then stop Move until the touch sensor is pressed then stop

Oops………………… What would you have written in your comment boxes? Try Again..

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This image shows the icon that lets you use a conditional statement. What is the name of this icon? a) Loop block Loop block b) Switch block Switch block c) Variable block Variable block d) Touch block Touch block

Oops………………… 0 Think – it does different things in the top and bottom depending on something Try Again..

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What is the function of a loop? a) It lets the program choose between different actionsIt lets the program choose between different actions b) It lets the program choose a sensor thresholdIt lets the program choose a sensor threshold c) It lets the robot move in a circleIt lets the robot move in a circle d) It lets specific parts of the program repeatIt lets specific parts of the program repeat

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To increase speed and reduce torque you could…. a) Use a larger drive gear coupled to smaller driven gearUse a larger drive gear coupled to smaller driven gear b) Use two large gears with a worm driveUse two large gears with a worm drive c) Use a crown gear to change direction of movementUse a crown gear to change direction of movement d) Use a small drive gear coupled to larger driven gearUse a small drive gear coupled to larger driven gear

Oops………………… 0 Been there, done that. THINK!! Try Again..

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Which port is the sensor plugged into? a) A5 A5 b) B B c) C C d) 4 4

Oops………………… 0 Remember the output ports are for the motors, and the input ports are for the sensors. Try Again..

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What is the Center of Gravity of a robot? a) The mass of the robot when calculated at a particular gravityThe mass of the robot when calculated at a particular gravity b) The heaviest part of the robot, including the attachmentsThe heaviest part of the robot, including the attachments c) The point of the robot where we can imagine all its weight to be located) The point of the robot where we can imagine all its weight to be located d) The physical center of the entire robot structureThe physical center of the entire robot structure

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Juan is going to design a kite for mass production. After doing research, Juan creates several different designs, and selects the one he wants to use. What are the next two steps Juan should do in the design process? a) Build and finish full-sized kites Build and finish full-sized kites b) Redesign the kite and evaluate it Redesign the kite and evaluate it c) Build a prototype of the kites and test it Build a prototype of the kites and test it d) Patent the kite design and sell it to others Patent the kite design and sell it to others

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What are the steps of the Engineering Design Process, in order? a) Identify Problem, design, build prototype, brainstorm, share, test and evaluate, redesign, build) Identify Problem, design, build prototype, brainstorm, share, test and evaluate, redesign, build b) Brainstorm, build, test and evaluate, design, share, identify problemsBrainstorm, build, test and evaluate, design, share, identify problems c) Design, build, brainstorm, test and evaluate, identify problems, share) Design, build, brainstorm, test and evaluate, identify problems, share d) Identify problem, brainstorm, design, build, test and evaluate, redesign, shareIdentify problem, brainstorm, design, build, test and evaluate, redesign, share

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NASA launched the Orion space capsule on December 5 th. This was the first launch test for the capsule that some hope may take astronauts to Mars one day. Which step of the Engineering Design Process did this launch represent? a) Design Design b) Build Build c) Test & evaluate Test & evaluate d) Share results Share results

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But wait! 0 There’s More!