Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 7 · 40 questions

Robot tip (Find the topic, use the idea): Find the topic: robot basics, moving, gears, sensors or programs. Use that lesson’s rule — sense/think/act, teeth × turns, circumference × turns, 17 cm per ms, follow every line. Safety answers are always: switch off, stay out of reach, an adult nearby, the emergency stop.

1. 1.🛞 A robot’s wheels have a diameter of 42 cm. Using π = 22/7, how far does the robot roll when the wheels turn 9 times (in cm)?
2. 2.⬛ A reading below the threshold means the sensor is over … (a) white (b) water (c) the sky (d) black
3. 3.True or false: to stay behind safety lines is not safe. (a) True (b) False
4. 4.⚠️ Is it safe to stay behind safety lines? (a) safe (b) not safe
5. 5.Which of these is not a robot? (a) a ceiling fan (b) a delivery robot (c) a floor-cleaning robot (d) a factory robot arm
6. 6.🔦 A light sensor reads 10 over black and 70 over white. A good threshold is halfway between them. What is it?
7. 7.🧭 A robot keeps turning right by 30° at a time. How many turns make one full circle?
8. 8.🛡️ Responsible or not: to check AI answers? (a) responsible (b) not responsible
9. 9.⬛ A line follower runs:
   if (right sees black) { turn right } else if (left sees black) { turn left } else { go forward }
   The left sensor sees white and the right sensor sees black. What does it do? (a) turn right (b) go forward (c) turn left
10. 10.🔁 A robot must draw a regular hexagon (6 equal sides):
    repeat 6 { forward 90 cm; turn right ?° }
    What number goes in place of “?”
11. 11.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 34 cm. What does the robot do? (a) turn right (b) go forward
12. 12.Which job is done by the wheels? (a) stores energy for parts (b) tell it what is around (c) make the wheels turn (d) roll it across the floor
13. 13.🔍 Which sensor helps a robot read a QR code? (a) a camera (b) a gyro sensor (c) a touch sensor (d) a light sensor
14. 14.🧠 Sense, think or act: “a sensor reads light”? (a) think (b) act (c) sense
15. 15.📡 An object is 68 cm from a distance sensor. Sound travels about 34 cm every millisecond. After how many milliseconds does the echo come back?
16. 16.🤖 Obstacle avoiding: what should a robot do when something is close? (a) push it hard (b) stop or turn away (c) speed up (d) close its eyes
17. 17.🛞 A small free-turning wheel that only helps a robot balance is called … (a) a caster wheel (b) a gear (c) a track (d) a servo
18. 18.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 13 cm and the light reading is 55. What does the robot do? (a) go forward (b) turn left (c) stop
19. 19.⬛ A line follower runs:
    if (left < 40) { turn left } else if (right < 40) { turn right } else { go forward }
    The left sensor reads 10 and the right sensor reads 90. What does it do? (a) turn right (b) go forward (c) turn left
20. 20.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
21. 21.🔍 Which is the odd one out? (a) hide that a bot is a bot (b) record people secretly (c) build a bully robot (d) ask before taking photos
22. 22.🧭 A robot faces south. It does: turn right, turn right, turn left. Which way does it face now? (a) east (b) north (c) west (d) south
23. 23.Which job is done by the motors? (a) tell it what is around (b) holds all parts together (c) measure light and sound (d) make the wheels turn
24. 24.🔍 Which is the odd one out? (a) make a new friend (b) make up a new song (c) repeat one task all day (d) judge what is fair
25. 25.🔍 Which sensor is just a tiny switch pressed by a bump? (a) a gyro sensor (b) a touch sensor (c) a sound sensor (d) a camera
26. 26.True or false: to check AI answers is a responsible way to use robots and AI. (a) False (b) True
27. 27.🤖 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
28. 28.🔁 A robot must draw a regular triangle (3 equal sides):
    repeat 3 { forward 30 cm; turn right ?° }
    What number goes in place of “?”
29. 29.🧩 Which part is like the robot’s food (its energy)? (a) the battery (b) the wheels (c) the gripper (d) the frame
30. 30.🐞 This program should draw a regular pentagon (5 equal sides), but it leaves a gap:
    repeat 3 { forward 10 cm; turn right 72° }
    What should the number 3 after “repeat” be?
31. 31.Which job is done by the frame? (a) measure light and sound (b) holds all parts together (c) picks up objects (d) decides what to do next
32. 32.🔍 Which is the odd one out? (a) open the battery pack (b) switch off before fixing (c) test with an adult near (d) check wires before use
33. 33.🔁 A robot must draw a regular pentagon (5 equal sides):
    repeat 5 { forward 90 cm; turn right ?° }
    What number goes in place of “?”
34. 34.⬛ A line follower runs:
    if (left sees black) { turn left } else if (right sees black) { turn right } else { go forward }
    It checks its sensors 4 times (left–right): white–white, white–white, white–white, black–white. How many times does it turn left?
35. 35.🤝 Who usually does this better — a robot or a person? “make a new friend” (a) a robot (b) a person
36. 36.🌍 Where does a crop-spraying drone usually work? (a) in a hospital (b) in a factory (c) on a farm (d) at home
37. 37.⬛ A line follower runs:
    if (left < 40) { turn left } else if (right < 40) { turn right } else { go forward }
    The left sensor reads 25 and the right sensor reads 35. What does it do? (a) turn left (b) go forward (c) turn right
38. 38.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
39. 39.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 65 and the right sensor reads 10. Which sensor is over the black line? (a) the left sensor (b) both sensors (c) the right sensor (d) neither sensor
40. 40.🔍 Which is the odd one out? (a) hide its mistakes (b) scare pets with a robot (c) post photos of strangers (d) check AI answers

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