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Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 290 · 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 < 30) { turn right } else { go forward }
    The distance sensor reads 23 cm. What does the robot do?     (a) go forward (b) turn right
  2. 2.🤖 if (bumper is pressed) { back up and turn right } else { go forward }
    The bumper is not pressed. What does the robot do?     (a) back up and turn right (b) go forward
  3. 3.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 10 cm and the light reading is 20. What does the robot do?     (a) turn left (b) stop (c) go forward
  4. 4.🤖 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
  5. 5.🤖 A robot is 77 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  6. 6.🤖 A robot is 59 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  7. 7.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 13 cm. What does the robot do?     (a) turn right (b) go forward
  8. 8.🤖 Obstacle avoiding: what should a robot do when something is close? (a) stop or turn away (b) push it hard (c) speed up (d) close its eyes
  9. 9.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 25 cm. What does the robot do?     (a) go forward (b) turn right
  10. 10.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 5 cm. What does the robot do?     (a) turn right (b) go forward
  11. 11.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 31 cm and the light reading is 45. What does the robot do?     (a) stop (b) turn left (c) go forward
  12. 12.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 6 cm and the light reading is 40. What does the robot do?     (a) turn left (b) go forward (c) stop
  13. 13.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 22 cm. What does the robot do?     (a) go forward (b) turn right
  14. 14.🤖 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
  15. 15.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 13 cm. What does the robot do?     (a) go forward (b) turn right
  16. 16.🤖 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
  17. 17.🤖 A robot is 69 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  18. 18.🤖 What does an “if” let a robot do? (a) go faster always (b) choose using a sensor (c) charge itself (d) skip all sensors
  19. 19.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 29 cm and the light reading is 40. What does the robot do?     (a) go forward (b) turn left (c) stop
  20. 20.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) the else part (b) neither part (c) the if part (d) both parts
  21. 21.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 18 cm and the light reading is 70. What does the robot do?     (a) go forward (b) turn left (c) stop
  22. 22.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 37 cm and the light reading is 80. What does the robot do?     (a) go forward (b) stop (c) turn left
  23. 23.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 16 cm. What does the robot do?     (a) go forward (b) turn right
  24. 24.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 39 cm and the light reading is 15. What does the robot do?     (a) stop (b) turn left (c) go forward
  25. 25.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 5 cm and the light reading is 20. What does the robot do?     (a) go forward (b) turn left (c) stop
  26. 26.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 28 cm. What does the robot do?     (a) go forward (b) turn right
  27. 27.🤖 A robot is 31 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.🤖 A robot is 87 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  29. 29.🤖 A robot is 104 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  30. 30.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 32 cm and the light reading is 70. What does the robot do?     (a) stop (b) go forward (c) turn left
  31. 31.🤖 A robot is 33 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) { 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 13 cm and the light reading is 25. What does the robot do?     (a) go forward (b) stop (c) turn left
  34. 34.🤖 A robot is 86 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  35. 35.🤖 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)?
  36. 36.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 40 cm and the light reading is 25. What does the robot do?     (a) stop (b) go forward (c) turn left
  37. 37.🤖 A robot is 107 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  38. 38.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 38 cm and the light reading is 80. What does the robot do?     (a) turn left (b) stop (c) go forward
  39. 39.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 15 cm. What does the robot do?     (a) turn right (b) go forward
  40. 40.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 18 cm and the light reading is 15. What does the robot do?     (a) stop (b) go forward (c) turn left

Answer key

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

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