← If / else with sensors lesson New set →

Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 697 · 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) stop or turn away (b) push it hard (c) speed up (d) close its eyes
  2. 2.🤖 A robot is 104 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  3. 3.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 25 cm. What does the robot do?     (a) go forward (b) turn right
  4. 4.🤖 A robot is 81 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  5. 5.🤖 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
  6. 6.🤖 A robot is 88 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 < 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
  8. 8.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 27 cm and the light reading is 25. What does the robot do?     (a) stop (b) go forward (c) turn left
  9. 9.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 28 cm and the light reading is 35. What does the robot do?     (a) turn left (b) stop (c) go forward
  10. 10.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) both parts (b) the if part (c) neither part (d) the else part
  11. 11.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 28 cm and the light reading is 10. What does the robot do?     (a) go forward (b) stop (c) turn left
  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) back up and turn left (b) go forward
  13. 13.🤖 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
  14. 14.🤖 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
  15. 15.🤖 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)?
  16. 16.🤖 A robot is 98 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  17. 17.🤖 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
  18. 18.🤖 A robot is 67 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  19. 19.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 14 cm and the light reading is 65. What does the robot do?     (a) turn left (b) stop (c) go forward
  20. 20.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 17 cm and the light reading is 50. What does the robot do?     (a) turn left (b) go forward (c) stop
  21. 21.🤖 What does an “if” let a robot do? (a) go faster always (b) choose using a sensor (c) charge itself (d) skip all sensors
  22. 22.🤖 A robot is 42 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  23. 23.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 34 cm and the light reading is 30. What does the robot do?     (a) go forward (b) stop (c) turn left
  24. 24.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 29 cm and the light reading is 30. What does the robot do?     (a) turn left (b) go forward (c) stop
  25. 25.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 24 cm and the light reading is 45. What does the robot do?     (a) turn left (b) stop (c) go forward
  26. 26.🤖 A robot is 77 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  27. 27.🤖 A robot is 79 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  28. 28.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 40 cm. What does the robot do?     (a) turn right (b) go forward
  29. 29.🤖 A robot is 30 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.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 15 cm and the light reading is 30. What does the robot do?     (a) go forward (b) turn left (c) stop
  31. 31.🤖 A robot is 35 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  32. 32.🤖 A robot is 49 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  33. 33.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 19 cm. What does the robot do?     (a) turn right (b) go forward
  34. 34.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 27 cm and the light reading is 70. What does the robot do?     (a) turn left (b) stop (c) go forward
  35. 35.🤖 A robot is 97 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 < 25) { turn right } else { go forward }
    The distance sensor reads 25 cm. What does the robot do?     (a) turn right (b) go forward
  37. 37.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 8 cm and the light reading is 15. What does the robot do?     (a) stop (b) turn left (c) go forward
  38. 38.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 33 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 27 cm and the light reading is 40. What does the robot do?     (a) stop (b) turn left (c) go forward
  40. 40.🤖 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)?

Answer key

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

Free robotics lessons, practice and worksheets at talentjr.in/robotics-for-kids