Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 38 · 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 needs 70 cm to stop once it brakes. It starts braking when its sensor sees a wall 110 cm away. How far from the wall does it stop (in cm)?
2. 2.⬛ 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 white. What does it do? (a) turn right (b) turn left (c) go forward
3. 3.🧭 How many degrees is a half turn (turn around)? (a) 90° (b) 45° (c) 360° (d) 180°
4. 4.🗺️ A robot is on a grid at (4, 5), facing west. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
   forward 2
   turn right
   forward 1
   Which way does it face at the end? (a) south (b) east (c) north (d) west
5. 5.🏆 In a robot challenge each can pushed into the circle scores 20 points. A robot pushes in 7 cans and gets 20 bonus points for parking in the end zone. What is its total score?
6. 6.🗺️ A robot is on a grid at (8, 1), facing east. (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
   Which way does it face at the end? (a) north (b) west (c) south (d) east
7. 7.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
8. 8.📋 A robot program runs:
   speed = 30
   speed = 50
   speed = speed + 10
   What is the speed at the end?
9. 9.True or false: the gripper stores energy for parts. (a) True (b) False
10. 10.🔢 To debug a robot program, which comes first: “run the program” or “test it again”? (a) test it again (b) run the program
11. 11.📡 A distance sensor sends a sound pulse and hears the echo 13 ms later. Sound travels about 34 cm every millisecond. How far away is the object (in cm)?
12. 12.🔢 To take part in a robot challenge, which is the LAST step? (a) compete and learn (b) build and program (c) read the rules (d) test and improve
13. 13.🏭 A robot arm packs 6 boxes every minute. How many boxes does it pack in 9 minutes?
14. 14.🛞 A robot has one motor on its left wheel and one on its right wheel. The left motor runs forward and the right motor runs forward. What does the robot do? (a) spins right on the spot (b) goes straight back (c) turns right (d) goes straight forward
15. 15.🔦 A light sensor reads below 30 over a black line and above 30 over the white floor. It reads 51. What is under the sensor? (a) the white floor (b) the black line
16. 16.🔍 Which is the odd one out? (a) poke fingers in gears (b) keep hair tied back (c) charge it on a bed (d) fix it while it runs
17. 17.🔁 A drawing robot runs:
    repeat 2 { forward 40 cm; turn right 90°; forward 15 cm; turn right 90° }
    What is the area of the rectangle it draws (in square cm)?
18. 18.Which job is done by an inspection robot? (a) uses heat to join steel (b) spots faulty parts (c) seals the cartons (d) moves parts onto a belt
19. 19.🔁 A robot must draw a regular square (4 equal sides):
    repeat 4 { forward 85 cm; turn right ?° }
    What number goes in place of “?”
20. 20.🧠 Sense, think or act: “it counts the boxes”? (a) sense (b) act (c) think
21. 21.🛞 A motor’s 10-tooth gear drives a 20-tooth gear on the wheel axle. The wheels have a diameter of 7 cm (use π = 22/7). The motor turns 6 times. How far does the robot roll (in cm)?
22. 22.🐞 This program should draw a regular triangle (3 equal sides), but the shape does not close:
    repeat 3 { forward 10 cm; turn right 90° }
    What should 90 be changed to?
23. 23.True or false: to check AI answers is a responsible way to use robots and AI. (a) True (b) False
24. 24.🗺️ A robot faces east and turns left. Which way does it face now? (a) south (b) north (c) east (d) west
25. 25.🤖 A robot is 79 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
26. 26.🌍 Where does a lab sample robot usually work? (a) under the sea (b) on a farm (c) in space (d) in a hospital
27. 27.🧭 A robot faces north. It does: turn around, turn left, turn left. Which way does it face now? (a) east (b) north (c) west (d) south
28. 28.🗺️ A robot is on a grid at (1, 4), facing north. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 3
    turn left
    forward 1
    Which way does it face at the end? (a) north (b) south (c) east (d) west
29. 29.📡 Which object is hardest for an echo sensor to notice? (a) a wooden box (b) a soft foam cushion (c) a metal door (d) a flat wall
30. 30.⚙️ A 20-tooth driver gear turns a 40-tooth driven gear. The driven gear turns 6 times. How many times did the driver turn?
31. 31.🦾 A servo turns 60° every 100 ms. How many milliseconds does it take to turn 180°?
32. 32.🧭 A robot spins 15° every second. How many seconds does it take to turn 360°?
33. 33.🏭 A robot that picks up an item and puts it in another place is called … (a) a lawn robot (b) a pick-and-place robot (c) a talking robot (d) a space robot
34. 34.🗺️ A robot faces north and moves forward 1 square. Which number goes up by 1? (a) the second (up) one (b) both numbers (c) the first one (d) neither number
35. 35.🦾 A servo moves from 90° to 140°. How many degrees does it turn?
36. 36.📡 A robot is 210 cm from a wall and drives straight at it at 10 cm per second. How far from the wall is it after 12 seconds (in cm)?
37. 37.Which of these suits propellers? (a) a long factory floor (b) soft snow (c) a muddy building site (d) flying over a field
38. 38.🔢 Gear ratio = driven teeth ÷ … (a) wheel size (b) driver teeth (c) number of gears (d) motor volts
39. 39.🧩 Which part of a robot tell it what is around? (a) the frame (b) the controller (c) the gripper (d) the sensors
40. 40.📡 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?

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