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Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 291 · 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 9 cm and the light reading is 90. What does the robot do?     (a) go forward (b) turn left (c) stop
  2. 2.🤖 What does an “if” let a robot do? (a) skip all sensors (b) charge itself (c) go faster always (d) choose using a sensor
  3. 3.🤖 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
  4. 4.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 11 cm. What does the robot do?     (a) go forward (b) turn right
  5. 5.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 23 cm and the light reading is 10. What does the robot do?     (a) turn left (b) go forward (c) stop
  6. 6.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 14 cm and the light reading is 75. What does the robot do?     (a) go forward (b) stop (c) turn left
  7. 7.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 16 cm. What does the robot do?     (a) go forward (b) turn right
  8. 8.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) the else part (b) the if part (c) both parts (d) neither part
  9. 9.🤖 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
  10. 10.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 20 cm and the light reading is 80. What does the robot do?     (a) go forward (b) turn left (c) stop
  11. 11.🤖 Obstacle avoiding: what should a robot do when something is close? (a) push it hard (b) close its eyes (c) stop or turn away (d) speed up
  12. 12.🤖 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
  13. 13.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 28 cm and the light reading is 75. What does the robot do?     (a) stop (b) go forward (c) turn left
  14. 14.🤖 A robot is 49 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  15. 15.🤖 A robot is 88 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  16. 16.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 15 cm. What does the robot do?     (a) turn right (b) go forward
  17. 17.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 33 cm. What does the robot do?     (a) go forward (b) turn right
  18. 18.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 21 cm and the light reading is 80. What does the robot do?     (a) turn left (b) go forward (c) stop
  19. 19.🤖 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
  20. 20.🤖 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
  21. 21.🤖 A robot is 86 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  22. 22.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 6 cm and the light reading is 15. What does the robot do?     (a) stop (b) go forward (c) turn left
  23. 23.🤖 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
  24. 24.🤖 A robot is 41 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) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 9 cm and the light reading is 30. What does the robot do?     (a) stop (b) go forward (c) turn left
  26. 26.🤖 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
  27. 27.🤖 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)?
  28. 28.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 25 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 40 cm and the light reading is 15. What does the robot do?     (a) stop (b) go forward (c) turn left
  30. 30.🤖 A robot is 79 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
  31. 31.🤖 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)?
  32. 32.🤖 A robot is 70 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  33. 33.🤖 A robot is 45 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
  34. 34.🤖 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
  35. 35.🤖 A robot is 41 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) { turn right } else { go forward }
    The distance sensor reads 26 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 37 cm and the light reading is 15. What does the robot do?     (a) go forward (b) turn left (c) stop
  38. 38.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 20 cm. What does the robot do?     (a) go forward (b) turn right
  39. 39.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 40 cm and the light reading is 10. What does the robot do?     (a) stop (b) turn left (c) go forward
  40. 40.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 13 cm. What does the robot do?     (a) go forward (b) turn right

Answer key

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

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