Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 941 · 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 (distance < 15) { turn right } else { go forward }
   The distance sensor reads 9 cm. What does the robot do? (a) turn right (b) go forward
2. 2.🤖 if (distance < 15) { turn right } else { go forward }
   The distance sensor reads 20 cm. What does the robot do? (a) go forward (b) turn right
3. 3.🤖 A robot is 85 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How far from the wall does it stop (in cm)?
4. 4.🤖 What does an “if” let a robot do? (a) skip all sensors (b) choose using a sensor (c) charge itself (d) go faster always
5. 5.🤖 A robot is 72 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How many times does it move forward?
6. 6.🤖 Obstacle avoiding: what should a robot do when something is close? (a) push it hard (b) stop or turn away (c) close its eyes (d) speed up
7. 7.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
   The distance is 27 cm and the light reading is 65. What does the robot do? (a) stop (b) turn left (c) go forward
8. 8.🤖 A robot is 81 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How far from the wall does it stop (in cm)?
9. 9.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
   The distance is 13 cm and the light reading is 85. What does the robot do? (a) stop (b) go forward (c) turn left
10. 10.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) the if part (b) neither part (c) both parts (d) the else part
11. 11.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 35 cm and the light reading is 30. What does the robot do? (a) stop (b) go forward (c) turn left
12. 12.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 16 cm. What does the robot do? (a) go forward (b) turn right
13. 13.🤖 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
14. 14.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 23 cm and the light reading is 15. What does the robot do? (a) stop (b) turn left (c) go forward
15. 15.🤖 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
16. 16.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 7 cm. What does the robot do? (a) turn right (b) go forward
17. 17.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 2 cm. What does the robot do? (a) turn right (b) go forward
18. 18.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 10 cm. What does the robot do? (a) turn right (b) go forward
19. 19.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 26 cm. What does the robot do? (a) go forward (b) turn right
20. 20.🤖 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
21. 21.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 8 cm and the light reading is 50. What does the robot do? (a) stop (b) turn left (c) go forward
22. 22.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 18 cm. What does the robot do? (a) turn right (b) go forward
23. 23.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 8 cm and the light reading is 10. What does the robot do? (a) stop (b) go forward (c) turn left
24. 24.🤖 A robot is 79 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
25. 25.🤖 A robot is 75 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
26. 26.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 37 cm and the light reading is 50. What does the robot do? (a) turn left (b) go forward (c) stop
27. 27.🤖 A robot is 40 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 < 30) { turn right } else { go forward }
    The distance sensor reads 31 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 18 cm and the light reading is 30. What does the robot do? (a) turn left (b) stop (c) go forward
30. 30.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 10 cm and the light reading is 15. What does the robot do? (a) turn left (b) stop (c) go forward
31. 31.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 27 cm and the light reading is 60. What does the robot do? (a) turn left (b) go forward (c) stop
32. 32.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 7 cm and the light reading is 90. What does the robot do? (a) stop (b) go forward (c) turn left
33. 33.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 20 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 36 cm and the light reading is 90. What does the robot do? (a) turn left (b) go forward (c) stop
35. 35.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 25 cm. What does the robot do? (a) go forward (b) turn right
36. 36.🤖 A robot is 32 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
37. 37.🤖 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)?
38. 38.🤖 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) go forward (b) stop (c) turn left
39. 39.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 8 cm and the light reading is 40. What does the robot do? (a) stop (b) turn left (c) go forward
40. 40.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 15 cm and the light reading is 20. 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