Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 43 · 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.⚙️ Which motor is best for spinning a robot’s wheels round and round? (a) a servo motor (b) a buzzer (c) a DC motor (d) a light sensor
2. 2.🗺️ A robot is on a grid at (4, 6), facing north. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
   forward 3
   turn right
   forward 3
   On which square does it stop? (a) (7, 9) (b) (9, 7) (c) (8, 9) (d) (4, 9)
3. 3.🔁 Why do we use a loop to draw a square? (a) the same steps repeat (b) squares need 5 sides (c) loops are colourful (d) to make it crash
4. 4.📋 A robot starts on the start line of a straight track and runs:
   forward 25 cm
   forward 30 cm
   back 20 cm
   back 5 cm
   How many cm in front of the start line is it now?
5. 5.Which of these is not safe? (a) keep fingers off gears (b) switch off before fixing (c) poke fingers in gears (d) check wires before use
6. 6.📡 A robot is 210 cm from a wall and drives straight at it at 20 cm per second. How far from the wall is it after 10 seconds (in cm)?
7. 7.Which of these is not a robot? (a) a parcel-sorting robot (b) a planet rover (c) a floor-cleaning robot (d) a hammer
8. 8.True or false: the controller gives the robot a shape. (a) True (b) False
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) turn left (c) go forward
10. 10.True or false: when the program picks a path, the robot is sensing. (a) False (b) True
11. 11.Which job needs a temperature sensor? (a) measure a turn angle (b) warn if motors get hot (c) know a button is pressed (d) spot a red ball
12. 12.⚠️ Is it safe to stay behind safety lines? (a) safe (b) not safe
13. 13.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
14. 14.📡 A distance sensor sends a sound pulse and hears the echo 14 ms later. Sound travels about 34 cm every millisecond. How far away is the object (in cm)?
15. 15.🤝 Can a robot truly feel happy or sad like a person? (a) yes, always (b) no, it has no feelings (c) only on Sundays (d) yes, when charged
16. 16.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
17. 17.🗺️ A robot is on a grid at (1, 2), facing north. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 3
    turn right
    forward 1
    turn left
    forward 1
    turn right
    forward 3
    On which square does it stop? (a) (2, 6) (b) (5, 6) (c) (6, 5) (d) (6, 6)
18. 18.🧩 Which part of a robot make the wheels turn? (a) the controller (b) the wheels (c) the battery (d) the motors
19. 19.Which of these is not safe? (a) open the battery pack (b) keep fingers off gears (c) charge on a hard surface (d) test with an adult near
20. 20.Which of these is a job robots do well? (a) search a smoky building (b) judge what is fair (c) invent a new game (d) teach with kindness
21. 21.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
22. 22.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
23. 23.🧠 Sense, think or act: “a bumper is pressed”? (a) act (b) sense (c) think
24. 24.Which of these is not a responsible way to use robots and AI? (a) fix bugs quickly (b) explain how it decides (c) say when it is a bot (d) hide that a bot is a bot
25. 25.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) not at all (c) at the same speed (d) slower but stronger
26. 26.🔦 A light sensor reads below 40 over a black line and above 40 over the white floor. It reads 49. What is under the sensor? (a) the white floor (b) the black line
27. 27.🧭 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 180°, then right 60°, then left 90°. What does the gyro read now (0° to 359°)?
28. 28.⚙️ A motor changes electrical energy into … (a) sound only (b) light (c) movement (d) water
29. 29.📡 An object is 170 cm from a distance sensor. Sound travels about 34 cm every millisecond. After how many milliseconds does the echo come back?
30. 30.🔍 Which is the odd one out? (a) ask before taking photos (b) take off a safety guard (c) post photos of strangers (d) copy AI work as your own
31. 31.🔦 A light sensor reads 20 over black and 70 over white. A good threshold is halfway between them. What is it?
32. 32.Which job needs a distance sensor? (a) know a button is pressed (b) measure how far a box is (c) find the brightest spot (d) start on a hand clap
33. 33.🗺️ Does “turn left” move the robot to a new square? (a) No, it only turns (b) Yes, one square (c) Yes, back to start (d) Yes, two squares
34. 34.🔁 A drawing robot runs:
    repeat 5 { repeat 4 { forward 25 cm; turn right 90° } }
    How many cm does it drive in all?
35. 35.🏭 4 robots each sort 40 parcels an hour. How many parcels do they sort together in 5 hours?
36. 36.🧠 Which parts do the “act” job? (a) the sensors (b) the camera (c) the motors (d) the program
37. 37.🔁 A robot must draw a regular triangle (3 equal sides):
    repeat 3 { forward 80 cm; turn right ?° }
    What number goes in place of “?”
38. 38.🔍 Which is the odd one out? (a) the gripper closes (b) a gyro feels a turn (c) a mic hears a clap (d) a bumper is pressed
39. 39.🏆 A robot scores 48, 20 and 57 points in three rounds. All rounds count. What is the total?
40. 40.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?

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