Robotics Worksheet: Robot If / Else

Robotics lesson 23: If / else with sensors · Set 330 · 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) go forward (b) back up and turn left
2. 2.🤖 A robot is 64 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How far from the wall does it stop (in cm)?
3. 3.🤖 if (distance < 20) { turn right } else { go forward }
   The distance sensor reads 18 cm. What does the robot do? (a) turn right (b) go forward
4. 4.🤖 A robot is 61 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 20 cm and the light reading is 75. What does the robot do? (a) turn left (b) stop (c) go forward
6. 6.🤖 A robot is 31 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How many times does it move forward?
7. 7.🤖 if (distance < 25) { turn right } else { go forward }
   The distance sensor reads 22 cm. What does the robot do? (a) turn right (b) go forward
8. 8.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
   The distance is 13 cm and the light reading is 65. What does the robot do? (a) stop (b) turn left (c) go forward
9. 9.🤖 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
10. 10.🤖 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
11. 11.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) the if part (b) both parts (c) neither part (d) the else part
12. 12.🤖 A robot is 71 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How far from the wall does it stop (in cm)?
13. 13.🤖 Obstacle avoiding: what should a robot do when something is close? (a) stop or turn away (b) speed up (c) push it hard (d) close its eyes
14. 14.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 34 cm and the light reading is 10. What does the robot do? (a) stop (b) turn left (c) go forward
15. 15.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 9 cm. What does the robot do? (a) turn right (b) go forward
16. 16.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 26 cm and the light reading is 80. What does the robot do? (a) turn left (b) go forward (c) stop
17. 17.🤖 A robot is 68 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
18. 18.🤖 A robot is 45 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) { turn right } else { go forward }
    The distance sensor reads 24 cm. What does the robot do? (a) turn right (b) go forward
20. 20.🤖 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)?
21. 21.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 10 cm and the light reading is 20. What does the robot do? (a) turn left (b) go forward (c) stop
22. 22.🤖 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
23. 23.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 1 cm. What does the robot do? (a) turn right (b) go forward
24. 24.🤖 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
25. 25.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 19 cm. What does the robot do? (a) go forward (b) turn right
26. 26.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 26 cm. What does the robot do? (a) turn right (b) go forward
27. 27.🤖 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
28. 28.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 19 cm and the light reading is 70. What does the robot do? (a) go forward (b) stop (c) turn left
29. 29.🤖 A robot is 58 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
30. 30.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 34 cm and the light reading is 80. What does the robot do? (a) stop (b) go forward (c) turn left
31. 31.🤖 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
32. 32.🤖 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
33. 33.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 24 cm and the light reading is 85. What does the robot do? (a) stop (b) turn left (c) go forward
34. 34.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 30 cm. What does the robot do? (a) turn right (b) go forward
35. 35.🤖 A robot is 78 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
36. 36.🤖 What does an “if” let a robot do? (a) go faster always (b) skip all sensors (c) charge itself (d) choose using a sensor
37. 37.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 20 cm. What does the robot do? (a) turn right (b) go forward
38. 38.🤖 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)?
39. 39.🤖 A robot is 91 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 28 cm and the light reading is 40. What does the robot do? (a) go forward (b) turn left (c) stop

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