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Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 466 · 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.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 33 cm and the light reading is 85. What does the robot do?     (a) stop (b) go forward (c) turn left
  2. 2.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 11 cm. What does the robot do?     (a) turn right (b) go forward
  3. 3.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 28 cm. What does the robot do?     (a) turn right (b) go forward
  4. 4.🤖 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
  5. 5.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 11 cm and the light reading is 45. What does the robot do?     (a) stop (b) go forward (c) turn left
  6. 6.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 34 cm. What does the robot do?     (a) go forward (b) turn right
  7. 7.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 15 cm and the light reading is 40. What does the robot do?     (a) turn left (b) go forward (c) stop
  8. 8.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 11 cm and the light reading is 20. What does the robot do?     (a) go forward (b) turn left (c) stop
  9. 9.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 14 cm and the light reading is 70. What does the robot do?     (a) stop (b) go forward (c) turn left
  10. 10.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 12 cm and the light reading is 30. What does the robot do?     (a) go forward (b) stop (c) turn left
  11. 11.🤖 A robot is 83 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  12. 12.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 32 cm. What does the robot do?     (a) turn right (b) go forward
  13. 13.🤖 if (bumper is pressed) { back up and turn right } else { go forward }
    The bumper is pressed. What does the robot do?     (a) go forward (b) back up and turn right
  14. 14.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 12 cm. What does the robot do?     (a) turn right (b) go forward
  15. 15.🤖 Obstacle avoiding: what should a robot do when something is close? (a) speed up (b) push it hard (c) stop or turn away (d) close its eyes
  16. 16.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) neither part (b) both parts (c) the if part (d) the else part
  17. 17.🤖 A robot is 39 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  18. 18.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 6 cm and the light reading is 10. What does the robot do?     (a) go forward (b) turn left (c) stop
  19. 19.🤖 A robot is 88 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  20. 20.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 6 cm. What does the robot do?     (a) go forward (b) turn right
  21. 21.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 24 cm. What does the robot do?     (a) turn right (b) go forward
  22. 22.🤖 A robot is 53 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  23. 23.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 16 cm and the light reading is 25. What does the robot do?     (a) stop (b) go forward (c) turn left
  24. 24.🤖 A robot is 44 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  25. 25.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 16 cm. What does the robot do?     (a) turn right (b) go forward
  26. 26.🤖 A robot is 36 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.🤖 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)?
  28. 28.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 9 cm. What does the robot do?     (a) turn right (b) go forward
  29. 29.🤖 A robot is 58 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  30. 30.🤖 A robot is 97 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  31. 31.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 5 cm and the light reading is 10. What does the robot do?     (a) stop (b) go forward (c) turn left
  32. 32.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 18 cm. What does the robot do?     (a) go forward (b) turn right
  33. 33.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 6 cm and the light reading is 30. What does the robot do?     (a) go forward (b) turn left (c) stop
  34. 34.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 12 cm. What does the robot do?     (a) turn right (b) go forward
  35. 35.🤖 A robot is 104 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  36. 36.🤖 What does an “if” let a robot do? (a) go faster always (b) skip all sensors (c) charge itself (d) choose using a sensor
  37. 37.🤖 if (bumper is pressed) { back up and turn left } else { go forward }
    The bumper is not pressed. What does the robot do?     (a) back up and turn left (b) go forward
  38. 38.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 21 cm. What does the robot do?     (a) turn right (b) go forward
  39. 39.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 11 cm and the light reading is 15. What does the robot do?     (a) turn left (b) go forward (c) stop
  40. 40.🤖 A robot is 105 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?

Answer key

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

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