Answer Key: Turning_Unit Level

Submitted by Randy Steele on 15 July, 2011 - 21:04

Answer Key: Unit Quiz

  1. A 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 NXT-G by sliding the Steering control to one extreme or the other. 
  2. A Swing 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 NXT-G by using two Move blocks; a first Move block used to stop the pivot wheel /motor (unless this is known to already stopped, e.g. at the beginning of program, or after another limited duration Move block) and the second Move block is used to move the turning wheel/motor.
  3. A U-Turn has both wheels moving forward, but at different speeds (this causes the robot to turn in a U-shape).  This is accomplished in NXT-G by sliding the Steering control off the center and to any position, except the extreme ends (the further off-center, the sharper the turn).
  4. The Move Block command turns the motor (not the robot) 90 degrees.
  5. 1) Guess-and-check
    2) Ratio and Proportion
    3) Unit Rate
    4) View Mode