Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 39 · 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 is 190 cm from a wall and drives towards it at 15 cm per second. It must stop 10 cm before the wall. For how many seconds can it drive?
2. 2.📋 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 %)?
3. 3.Which job is done by the motors? (a) make the wheels turn (b) tell it what is around (c) runs the program (d) roll it across the floor
4. 4.🗺️ A robot is on a grid at (1, 6), facing west. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
   forward 1
   turn right
   forward 1
   What is the first number (across) of the square where it stops?
5. 5.🚀 A rover drives 1 cm every second for 10 minutes. How many metres does it travel? =
6. 6.📋 A warehouse robot starts with an empty tray and runs:
   pick up 2 boxes
   put down 1 box
   pick up 3 boxes
   put down 4 boxes
   pick up 2 boxes
   How many boxes are on its tray at the end?
7. 7.🏆 Good or poor teamwork: to help a stuck team? (a) poor teamwork (b) good teamwork
8. 8.🛑 A robot moves 10 cm every second and checks its distance sensor every 200 ms. How far does it move between two checks (in cm)? =
9. 9.🏭 Which job is a factory robot arm best at? (a) making new friends (b) telling jokes (c) one task again and again (d) choosing a new design
10. 10.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 21 cm. What does the robot do? (a) turn right (b) go forward
11. 11.True or false: a robot lawn mower is a robot. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) learn the stop button (b) stand in a robot’s path (c) use a swollen battery (d) poke fingers in gears
13. 13.⚙️ A 15-tooth driver gear turns a 60-tooth driven gear. The driven gear turns 10 times. How many times did the driver turn?
14. 14.⚙️ A 24-tooth driver gear turns a 12-tooth driven gear. The driver turns 4 times. How many times does the driven gear turn?
15. 15.True or false: “a long factory floor” suits propellers. (a) True (b) False
16. 16.⬛ In a two-sensor line follower, both sensors see white. Where is the line? (a) between the two sensors (b) under the left sensor (c) under the right sensor (d) far behind it
17. 17.🗺️ A robot is on a grid at (7, 2), facing west. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 1
    turn right
    forward 1
    What is the first number (across) of the square where it stops?
18. 18.🌍 Where does a reef-mapping robot usually work? (a) under the sea (b) in a warehouse (c) in a hospital (d) in a factory
19. 19.🦾 A servo arm points right at 0°, straight up at 90° and left at 180°. It is set to 90°. Where does the arm point? (a) points up and right (b) points straight up (c) points left (d) points up and left
20. 20.🔁 A robot must draw a regular octagon (8 equal sides):
    repeat 8 { forward 80 cm; turn right ?° }
    What number goes in place of “?”
21. 21.🔁 A drawing robot runs:
    repeat 2 { forward 35 cm; turn right 90°; forward 55 cm; turn right 90° }
    What is the area of the rectangle it draws (in square cm)?
22. 22.⬛ A line follower runs:
    if (left < 40) { turn left } else if (right < 40) { turn right } else { go forward }
    The left sensor reads 40 and the right sensor reads 10. What does it do? (a) go forward (b) turn left (c) turn right
23. 23.True or false: to know a button is pressed, use a light sensor. (a) False (b) True
24. 24.🔢 To debug a robot program, which comes first: “run the program” or “spot what went wrong”? (a) run the program (b) spot what went wrong
25. 25.🧭 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 30°, then left 60°, then left 60°. What does the gyro read now (0° to 359°)?
26. 26.⬛ A line follower runs:
    if (left sees black) { turn left } else if (right sees black) { turn right } else { go forward }
    It checks its sensors 5 times (left–right): white–white, black–white, black–black, white–black, white–white. How many times does it turn right?
27. 27.🦾 A servo arm points right at 0°, straight up at 90° and left at 180°. It is set to 180°. Where does the arm point? (a) points left (b) points right (c) points up and right (d) points up and left
28. 28.🧠 In which order does a robot work? (a) act → think → sense (b) think → act → sense (c) act → sense → think (d) sense → think → act
29. 29.🏭 A welding robot takes 12 seconds for each weld. How many welds does it finish in 4 minutes?
30. 30.🤖 Obstacle avoiding: what should a robot do when something is close? (a) speed up (b) close its eyes (c) stop or turn away (d) push it hard
31. 31.⚠️ A robot arm suddenly moves towards you. What should you do? (a) step back, call an adult (b) push it hard (c) stand still in front (d) grab the arm
32. 32.🧩 Which parts are like the robot’s muscles? (a) the frame (b) the motors (c) the sensors (d) the battery
33. 33.⬛ 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): black–black, white–black, white–white, white–white. How many times does it turn left?
34. 34.⚙️ A robot fan must spin very fast. The motor’s driver gear meshes with a small gear. What kind of driver gear works best? (a) a small driver gear (b) a big driver gear
35. 35.🔦 A light sensor reads 30 over black and 80 over white. A good threshold is halfway between them. What is it?
36. 36.🏆 Good or poor teamwork: to say sorry for mistakes? (a) poor teamwork (b) good teamwork
37. 37.Which job needs a camera? (a) measure a turn angle (b) feel a bump into a wall (c) hear a whistle (d) read a QR code
38. 38.🚗 A car that brakes by itself when it senses danger is using … (a) magic (b) a horn (c) robot technology (d) a hand brake only
39. 39.⬛ A line follower runs:
    if (left sees black) { turn left } else if (right sees black) { turn right } else { go forward }
    The left sensor sees black and the right sensor sees black. What does it do? (a) turn right (b) go forward (c) turn left
40. 40.🌍 Where does a medicine-cart robot usually work? (a) in space (b) in a hospital (c) on a farm (d) at home

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