Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 17 · 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.🏆 Before a robot competition, what should a team read first? (a) the menu (b) a comic (c) nothing (d) the rules
2. 2.🧩 Which part of a robot stores energy for parts? (a) the frame (b) the battery (c) the wheels (d) the motors
3. 3.🔦 A light sensor reads below 50 over a black line and above 50 over the white floor. It reads 42. What is under the sensor? (a) the black line (b) the white floor
4. 4.Which of these robots works in a warehouse? (a) a satellite-fixing robot (b) a parcel-sorting robot (c) a car-painting robot (d) a deep-sea robot
5. 5.🛑 A robot needs 25 cm to stop once it brakes. It starts braking when its sensor sees a wall 90 cm away. How far from the wall does it stop (in cm)?
6. 6.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
7. 7.🧠 Which part of a robot does the “think” job? (a) the bumper (b) the controller (c) the frame (d) the wheels
8. 8.Which job is done by a welding robot? (a) moves parts onto a belt (b) sprays car bodies evenly (c) joins metal parts (d) puts chips on a board
9. 9.🤖 What does an “if” let a robot do? (a) go faster always (b) charge itself (c) skip all sensors (d) choose using a sensor
10. 10.⚠️ Is it safe to fix it while it runs? (a) not safe (b) safe
11. 11.🔁 A robot must draw a regular hexagon (6 equal sides):
    repeat 6 { forward 80 cm; turn right ?° }
    What number goes in place of “?”
12. 12.🗺️ A robot is on a grid at (3, 6), facing east. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 1
    turn left
    forward 1
    turn left
    forward 1
    On which square does it stop? (a) (4, 7) (b) (7, 3) (c) (3, 8) (d) (3, 7)
13. 13.🛑 A robot moves 10 cm every second and checks its distance sensor every 500 ms. How far does it move between two checks (in cm)? =
14. 14.🏆 A team’s robot scores 74, 41 and 25 in three rounds. Only the best round counts. What is the team’s score?
15. 15.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 33 cm and the light reading is 10. What does the robot do? (a) turn left (b) go forward (c) stop
16. 16.🧭 A robot’s gyro reads 0° when it faces north and counts up to 359° as it turns right (east is 90°). It starts at 270°. It turns right 60°, then left 60°, then right 180°. What does the gyro read now (0° to 359°)?
17. 17.📡 A robot is 130 cm from a wall and drives straight at it at 5 cm per second. How far from the wall is it after 23 seconds (in cm)?
18. 18.🛞 How does a two-wheeled robot with no steering turn? (a) it stops for ever (b) it uses a sail (c) one wheel runs faster (d) it jumps
19. 19.📋 A robot’s battery is at 100%. Each “forward 10 cm” uses 2% and each turn uses 1%. It runs:
    repeat 2 { forward 10 cm; turn right 90° }
    What is the battery level at the end (in %)?
20. 20.⬛ Left sensor sees black, right sensor sees white. Which way should a line follower turn? (a) right (b) backwards (c) left (d) nowhere
21. 21.⚙️ DC motor or servo motor: which one moves an arm joint? (a) a servo motor (b) a DC motor
22. 22.📋 A robot starts on the start line of a straight track and runs:
    forward 25 cm
    back 15 cm
    forward 35 cm
    How many cm in front of the start line is it now?
23. 23.🛑 A robot is 60 cm from a wall and drives towards it at 10 cm per second. It must stop 30 cm before the wall. For how many seconds can it drive?
24. 24.⚙️ An 8-tooth gear drives a 16-tooth gear. What is the gear ratio (driven teeth ÷ driver teeth)?
25. 25.🤖 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
26. 26.Which of these robots works in a hospital? (a) a crop-spraying drone (b) a chip-placing robot (c) a medicine-cart robot (d) a window-cleaning robot
27. 27.🛑 A robot is 170 cm from a wall. It drives at 30 cm per second until it is 80 cm away, then slows to 5 cm per second and stops when it is 20 cm away. How many seconds does the whole trip take?
28. 28.🔍 What does a gyro sensor measure? (a) colour (b) temperature (c) sound (d) turning (rotation)
29. 29.⚙️ A 20-tooth driver gear must make the driven gear turn 5 times slower. How many teeth must the driven gear have?
30. 30.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) pins (d) tyres
31. 31.🐞 This program should draw a regular triangle (3 equal sides), but it leaves a gap:
    repeat 2 { forward 10 cm; turn right 120° }
    What should the number 2 after “repeat” be?
32. 32.🚀 A radio message takes 17 minutes to travel between the team and a far-away rover. The rover answers at once. How many minutes after sending a command does the team get the answer?
33. 33.🧠 A robot keeps repeating sense → think → act. This repeating is called … (a) a crash (b) a loop (c) a battery (d) a gear
34. 34.🔢 To make a robot vacuum avoid a chair, what comes right after “the bumper is pressed”? (a) the motors turn it (b) the controller reads it (c) it decides to turn (d) it drives on
35. 35.🏭 A welding robot takes 6 seconds for each weld. How many welds does it finish in 5 minutes?
36. 36.🤖 In “if (distance < 20)”, what runs when the distance is exactly 20? (a) neither part (b) the if part (c) the else part (d) both parts
37. 37.🤖 A robot is 82 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
38. 38.⚙️ A 15-tooth driver gear must make the driven gear turn 2 times slower. How many teeth must the driven gear have?
39. 39.🤖 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
40. 40.Which job is done by the sensors? (a) runs the program (b) tell it what is around (c) gives the robot a shape (d) roll it across the floor

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