Answer Key: EV3 - Taking Turns_Unit Level_Quiz

 

Answer Key: Unit Quiz

  1. Block 'A' is the Move Steering Block. Notice the steering wheel  in the Move Steering parameter.
  2. The Move Steering Block controls both motors together. The Move Tank Block allows each motor to be controlled separately...i.e. speed and direction.
  3. A Turn in Place (Point Turn) has one wheel going forward and the other going backward at the same speed  this causes the robot to turn a point located at the center of the axle between the wheels.  This is accomplished in EV3-G by sliding the Steering parameter in the Move Steering Block to one extreme or the other. 
  4. A Swing Wide Turn has one wheel stopped and the other moving (this causes the robot to swing , or pivot, around one stopped wheel).  This is accomplished in EV3-G by using the Move Tank Block ; the first Steering parameter is used to stop the pivot wheel /motor and the second Steering parameter is used to move the turning wheel/motor.
  5. A U-Turn has both wheels moving in the same direction, but at different speeds (this causes the robot to turn in a U-shape).  This is accomplished in EV3-G by sliding the Steering parameter off the center and to any position, except the extreme ends (the further off-center, the sharper the turn).
  6. The Move commands turns the motor (not the robot) 90 degrees.
  7. 1) Guess-and-check
    2) Ratio and Proportion
    3) Unit Rate
    4) Port View App

     
  8. Turning beyond what you want your robot to turn NOT because your settings are inaccurate, but because of Gyro Sensor limitations, delay of sensing and signal transmission, and physical momentum.
  9. Gyro Sensor limitations, delay of sensing and signal transmission, and physical momentum.
  10. Slow motor and set Gyro Sensor reading for less that what you want.
  11. Slow the motor from 100 to a lower number (maybe 50) and decrease the Gyro Sensor reading from 90 to a lower number (maybe 86).
  12. Something like this...
–Start
•Run motor C for 3 rotations
•Run motor B for 3 rotations
•Run Motors B & C for 5 seconds
–End