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Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 385 · 40 questions
TalentJR

Robot tip (True → if, false → else): Put the reading into the condition: true → the if part, false → the else part. < means strictly less; an equal reading makes it false. else if: check the conditions from the top; the first true one wins. while: repeat until the condition is false.

NameDateTime takenScore ___ / 40
  1. 1.🤖 Obstacle avoiding: what should a robot do when something is close? (a) push it hard (b) stop or turn away (c) speed up (d) close its eyes
  2. 2.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 6 cm. What does the robot do?     (a) go forward (b) turn right
  3. 3.🤖 if (bumper is pressed) { back up and turn left } else { go forward }
    The bumper is pressed. What does the robot do?     (a) go forward (b) back up and turn left
  4. 4.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 40 cm and the light reading is 40. What does the robot do?     (a) turn left (b) stop (c) go forward
  5. 5.🤖 A robot is 32 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  6. 6.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 28 cm. What does the robot do?     (a) turn right (b) go forward
  7. 7.🤖 A robot is 86 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  8. 8.🤖 What does an “if” let a robot do? (a) charge itself (b) skip all sensors (c) choose using a sensor (d) go faster always
  9. 9.🤖 A robot is 101 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  10. 10.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 24 cm. What does the robot do?     (a) go forward (b) turn right
  11. 11.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) both parts (b) neither part (c) the if part (d) the else part
  12. 12.🤖 if (bumper is pressed) { back up and turn left } else { go forward }
    The bumper is not pressed. What does the robot do?     (a) go forward (b) back up and turn left
  13. 13.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 19 cm and the light reading is 50. What does the robot do?     (a) stop (b) go forward (c) turn left
  14. 14.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 11 cm. What does the robot do?     (a) go forward (b) turn right
  15. 15.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 33 cm and the light reading is 50. What does the robot do?     (a) stop (b) turn left (c) go forward
  16. 16.🤖 A robot is 61 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  17. 17.🤖 if (bumper is pressed) { back up and turn right } else { go forward }
    The bumper is not pressed. What does the robot do?     (a) go forward (b) back up and turn right
  18. 18.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 16 cm and the light reading is 50. What does the robot do?     (a) go forward (b) turn left (c) stop
  19. 19.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 7 cm. What does the robot do?     (a) go forward (b) turn right
  20. 20.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 20 cm. What does the robot do?     (a) go forward (b) turn right
  21. 21.🤖 A robot is 70 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  22. 22.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 11 cm. What does the robot do?     (a) turn right (b) go forward
  23. 23.🤖 A robot is 102 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  24. 24.🤖 A robot is 82 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  25. 25.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 36 cm and the light reading is 70. What does the robot do?     (a) go forward (b) turn left (c) stop
  26. 26.🤖 A robot is 73 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  27. 27.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 10 cm and the light reading is 55. What does the robot do?     (a) turn left (b) go forward (c) stop
  28. 28.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 18 cm. What does the robot do?     (a) go forward (b) turn right
  29. 29.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 22 cm and the light reading is 75. What does the robot do?     (a) turn left (b) go forward (c) stop
  30. 30.🤖 A robot is 36 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  31. 31.🤖 A robot is 54 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  32. 32.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 15 cm and the light reading is 75. What does the robot do?     (a) stop (b) turn left (c) go forward
  33. 33.🤖 A robot is 45 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  34. 34.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 39 cm. What does the robot do?     (a) go forward (b) turn right
  35. 35.🤖 if (bumper is pressed) { back up and turn right } else { go forward }
    The bumper is pressed. What does the robot do?     (a) back up and turn right (b) go forward
  36. 36.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 39 cm and the light reading is 35. What does the robot do?     (a) turn left (b) go forward (c) stop
  37. 37.🤖 A robot is 55 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  38. 38.🤖 A robot is 75 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  39. 39.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 36 cm and the light reading is 75. What does the robot do?     (a) go forward (b) turn left (c) stop
  40. 40.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 32 cm and the light reading is 10. What does the robot do?     (a) turn left (b) go forward (c) stop

Answer key

  1. stop or turn away
  2. turn right
  3. back up and turn left
  4. go forward
  5. 2
  6. turn right
  7. 7
  8. choose using a sensor
  9. 11
  10. go forward
  11. the else part
  12. go forward
  13. go forward
  14. go forward
  15. go forward
  16. 5
  17. go forward
  18. go forward
  19. turn right
  20. go forward
  21. 5
  22. turn right
  23. 9
  24. 12
  25. go forward
  26. 13
  27. stop
  28. go forward
  29. go forward
  30. 2
  31. 14
  32. go forward
  33. 15
  34. go forward
  35. back up and turn right
  36. go forward
  37. 4
  38. 6
  39. go forward
  40. turn left

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