Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 32 · 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 spins 45° every second. How many seconds does it take to turn 135°?
2. 2.Which of these is a job robots do well? (a) crawl in narrow pipes (b) teach with kindness (c) invent a new game (d) plan a birthday party
3. 3.True or false: “invent a new game” is a job robots do well. (a) False (b) True
4. 4.🔢 To climb a steep ramp, a robot needs a gear ratio that is … (a) small (fast, weak) (b) zero (c) big (slow and strong) (d) never important
5. 5.🧩 Which part of a robot stores energy for parts? (a) the frame (b) the controller (c) the battery (d) the motors
6. 6.🔦 A light sensor reads below 60 over a black line and above 60 over the white floor. It reads 48. What is under the sensor? (a) the white floor (b) the black line
7. 7.🔁 A drawing robot runs:
   repeat 2 { forward 25 cm; turn right 90°; forward 55 cm; turn right 90° }
   How many cm does it drive in all?
8. 8.🔍 Which is the odd one out? (a) reach into a moving arm (b) poke fingers in gears (c) open the battery pack (d) stay behind safety lines
9. 9.📡 A distance sensor sends a sound pulse and hears the echo 2 ms later. Sound travels about 34 cm every millisecond. How far away is the object (in cm)?
10. 10.🔍 For a robot’s controller, is a sensor an input or an output? (a) a gear (b) a wheel (c) an output (d) an input
11. 11.🤖 if (distance < 25) { turn right } else { go forward }
    The distance sensor reads 32 cm. What does the robot do? (a) turn right (b) go forward
12. 12.Which job needs a camera? (a) follow a black line (b) measure how far a box is (c) stay balanced upright (d) read a QR code
13. 13.⚙️ DC motor or servo motor: which one has just two wires? (a) a DC motor (b) a servo motor
14. 14.🦾 A servo turns 60° every 100 ms. How many milliseconds does it take to turn 90°?
15. 15.🧩 Which part of a robot must be charged again? (a) the frame (b) the battery (c) the sensors (d) the controller
16. 16.🔁 To draw any closed regular shape, a robot turns how many degrees in all? (a) 90° (b) 720° (c) 180° (d) 360°
17. 17.🔢 To make a robot vacuum avoid a chair, what comes right after “it decides to turn”? (a) the motors turn it (b) it drives on (c) the bumper is pressed (d) the controller reads it
18. 18.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
19. 19.🛞 Which way of moving suits this best: “a flat road”? (a) legs (b) tracks (c) propellers (d) wheels
20. 20.🌍 Where does a robot lawn mower usually work? (a) at home (b) in a hospital (c) under the sea (d) on a farm
21. 21.🤖 Is a floor-cleaning robot a robot? (a) a robot (b) not a robot
22. 22.⚙️ DC motor or servo motor: which one drives the wheels? (a) a servo motor (b) a DC motor
23. 23.⚙️ A 20-tooth driver gear turns a 10-tooth driven gear. The driver turns 9 times. How many times does the driven gear turn?
24. 24.⚙️ A 20-tooth driver gear turns a 40-tooth driven gear. The driver turns 4 times. How many times does the driven gear turn?
25. 25.🔍 Which is the odd one out? (a) make up a new song (b) search a smoky building (c) choose a gift for mum (d) make a new friend
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 6 times (left–right): white–black, white–black, white–white, black–black, white–black, black–white. How many times does it turn left?
27. 27.🚀 A radio message takes 21 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?
28. 28.⚠️ Is it safe to switch off before fixing? (a) safe (b) not safe
29. 29.🗺️ A robot is on a grid at (3, 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 2
    turn right
    forward 3
    What is the first number (across) of the square where it stops?
30. 30.🛑 A robot moves 20 cm every second and checks its distance sensor every 100 ms. How far does it move between two checks (in cm)? =
31. 31.⚙️ A 10-tooth driver gear must make the driven gear turn 2 times slower. How many teeth must the driven gear have?
32. 32.Which of these shows that the robot is sensing? (a) a gyro feels a turn (b) the wheels spin (c) it counts the boxes (d) a buzzer beeps
33. 33.⚠️ A robot arm suddenly moves towards you. What should you do? (a) grab the arm (b) stand still in front (c) push it hard (d) step back, call an adult
34. 34.🧩 Which parts are like the robot’s muscles? (a) the frame (b) the sensors (c) the motors (d) the battery
35. 35.Which job is done by the motors? (a) move the arms and legs (b) decides what to do next (c) must be charged again (d) measure light and sound
36. 36.🤖 if (distance < 30) { turn right } else { go forward }
    The distance sensor reads 25 cm. What does the robot do? (a) turn right (b) go forward
37. 37.📋 A robot starts on the start line of a straight track and runs:
    forward 45 cm
    back 5 cm
    forward 20 cm
    forward 5 cm
    back 20 cm
    How many cm in front of the start line is it now?
38. 38.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 37 cm and the light reading is 25. What does the robot do? (a) go forward (b) stop (c) turn left
39. 39.🛞 A robot’s wheels have a diameter of 8 cm. Using π = 3.14, how far does the robot roll when the wheels turn 4 times (in cm)? =
40. 40.⚙️ A 12-tooth driver gear turns a 48-tooth driven gear. The driver turns 32 times. How many times does the driven gear turn?

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