Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 276 · 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.🤖 A robot is 76 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How many times does it move forward?
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 (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
4. 4.🤖 What does an “if” let a robot do? (a) choose using a sensor (b) charge itself (c) skip all sensors (d) go faster always
5. 5.🤖 if (distance < 20) { turn right } else { go forward }
   The distance sensor reads 30 cm. What does the robot do? (a) go forward (b) turn right
6. 6.🤖 A robot is 35 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How many times does it move forward?
7. 7.🤖 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
8. 8.🤖 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
9. 9.🤖 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
10. 10.🤖 A robot is 51 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
11. 11.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 16 cm and the light reading is 15. What does the robot do? (a) go forward (b) stop (c) turn left
12. 12.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 39 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 10 cm and the light reading is 90. What does the robot do? (a) turn left (b) go forward (c) stop
14. 14.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 11 cm and the light reading is 25. What does the robot do? (a) go forward (b) stop (c) turn left
15. 15.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 16 cm and the light reading is 40. What does the robot do? (a) go forward (b) stop (c) turn left
16. 16.🤖 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
17. 17.🤖 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)?
18. 18.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 23 cm. What does the robot do? (a) go forward (b) turn right
19. 19.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 27 cm. What does the robot do? (a) go forward (b) turn right
20. 20.🤖 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
21. 21.🤖 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
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 36 cm and the light reading is 30. What does the robot do? (a) stop (b) go forward (c) turn left
24. 24.🤖 A robot is 83 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
25. 25.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 20 cm and the light reading is 55. What does the robot do? (a) turn left (b) go forward (c) stop
26. 26.🤖 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) turn left (b) go forward (c) stop
27. 27.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 22 cm and the light reading is 80. What does the robot do? (a) go forward (b) stop (c) turn left
28. 28.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 29 cm and the light reading is 15. What does the robot do? (a) go forward (b) turn left (c) stop
29. 29.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 22 cm. What does the robot do? (a) go forward (b) turn right
30. 30.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 18 cm. What does the robot do? (a) go forward (b) turn right
31. 31.🤖 A robot is 76 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 < 25) { turn right } else { go forward }
    The distance sensor reads 20 cm. What does the robot do? (a) turn right (b) go forward
33. 33.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 6 cm and the light reading is 10. What does the robot do? (a) go forward (b) stop (c) turn left
34. 34.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 35 cm. What does the robot do? (a) turn right (b) go forward
35. 35.🤖 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
36. 36.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 7 cm and the light reading is 80. What does the robot do? (a) go forward (b) turn left (c) stop
37. 37.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 11 cm and the light reading is 70. What does the robot do? (a) go forward (b) turn left (c) stop
38. 38.🤖 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)?
39. 39.🤖 A robot is 55 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
40. 40.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 30 cm and the light reading is 50. What does the robot do? (a) turn left (b) go forward (c) stop

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