Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 15 · 40 questions

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.

1. 1.🤖 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
2. 2.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) the else part (b) both parts (c) neither part (d) the if part
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 75. What does the robot do? (a) turn left (b) stop (c) go forward
4. 4.🤖 A robot is 73 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How many times does it move forward?
5. 5.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
   The distance is 14 cm and the light reading is 10. What does the robot do? (a) go forward (b) stop (c) turn left
6. 6.🤖 if (bumper is pressed) { back up and turn left } else { go forward }
   The bumper is pressed. What does the robot do? (a) back up and turn left (b) go forward
7. 7.🤖 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
8. 8.🤖 What does an “if” let a robot do? (a) skip all sensors (b) choose using a sensor (c) go faster always (d) charge itself
9. 9.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
   The distance is 31 cm and the light reading is 80. What does the robot do? (a) stop (b) turn left (c) go forward
10. 10.🤖 Obstacle avoiding: what should a robot do when something is close? (a) speed up (b) push it hard (c) close its eyes (d) stop or turn away
11. 11.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 29 cm and the light reading is 85. 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 30 cm and the light reading is 25. 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 27 cm. What does the robot do? (a) turn right (b) go forward
14. 14.🤖 A robot is 39 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
15. 15.🤖 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
16. 16.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 40 cm. What does the robot do? (a) go forward (b) turn right
17. 17.🤖 A robot is 38 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
18. 18.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 3 cm. What does the robot do? (a) turn right (b) go forward
19. 19.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 12 cm and the light reading is 40. What does the robot do? (a) stop (b) turn left (c) go forward
20. 20.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 12 cm. What does the robot do? (a) go forward (b) turn right
21. 21.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 19 cm and the light reading is 30. What does the robot do? (a) stop (b) go forward (c) turn left
22. 22.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 24 cm and the light reading is 25. What does the robot do? (a) stop (b) turn left (c) go forward
23. 23.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 24 cm. What does the robot do? (a) go forward (b) turn right
24. 24.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 29 cm. What does the robot do? (a) turn right (b) go forward
25. 25.🤖 A robot is 43 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
26. 26.🤖 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
27. 27.🤖 A robot is 34 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) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 40 cm and the light reading is 85. What does the robot do? (a) stop (b) turn left (c) go forward
29. 29.🤖 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
30. 30.🤖 A robot is 82 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 9 cm and the light reading is 35. What does the robot do? (a) turn left (b) stop (c) go forward
32. 32.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 18 cm and the light reading is 60. What does the robot do? (a) stop (b) turn left (c) go forward
33. 33.🤖 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
34. 34.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 30 cm. What does the robot do? (a) go forward (b) turn right
35. 35.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 13 cm and the light reading is 10. What does the robot do? (a) stop (b) go forward (c) turn left
36. 36.🤖 A robot is 75 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
37. 37.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 32 cm and the light reading is 35. What does the robot do? (a) go forward (b) turn left (c) stop
38. 38.🤖 A robot is 37 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
39. 39.🤖 A robot is 70 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
40. 40.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 12 cm and the light reading is 70. What does the robot do? (a) go forward (b) stop (c) turn left

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