Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 18 · 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 36-tooth driver gear turns a 12-tooth driven gear. The driver turns 7 times. How many times does the driven gear turn?
2. 2.🏭 Which factory robot seals the cartons? (a) a welding robot (b) a packing robot (c) a pick-and-place robot (d) an inspection robot
3. 3.⬛ A one-sensor robot follows the edge of a line:
   if (light < 40) { turn right } else { turn left }
   The sensor reads 22. What does it do? (a) turn right (b) turn left
4. 4.🔍 Which is the odd one out? (a) write a funny story (b) explore the deep sea (c) comfort a sad friend (d) make up a new song
5. 5.🔢 To climb a steep ramp, a robot needs a gear ratio that is … (a) zero (b) big (slow and strong) (c) small (fast, weak) (d) never important
6. 6.📋 A robot’s battery is at 100%. Each “forward 10 cm” uses 2% and each turn uses 2%. It runs:
   repeat 6 { forward 10 cm; turn right 90° }
   What is the battery level at the end (in %)?
7. 7.🗺️ A robot is on a grid at (4, 2), facing west. (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
   turn left
   forward 1
   turn right
   forward 1
   Which way does it face at the end? (a) east (b) north (c) west (d) south
8. 8.Which job needs a temperature sensor? (a) measure how far a box is (b) warn if motors get hot (c) read a QR code (d) measure a turn angle
9. 9.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a candle (d) a rechargeable battery
10. 10.🧩 Which parts are like the robot’s muscles? (a) the frame (b) the motors (c) the sensors (d) the battery
11. 11.True or false: to ask before taking photos is a responsible way to use robots and AI. (a) False (b) True
12. 12.🏥 How does a surgery robot help a doctor? (a) talks to patients (b) does the job alone (c) makes tiny steady moves (d) gives medicines
13. 13.🤖 Who writes the program that tells a robot what to do? (a) the battery (b) the robot’s wheels (c) nobody at all (d) people (programmers)
14. 14.Which job is done by the gripper? (a) picks up objects (b) holds all parts together (c) stores energy for parts (d) runs the program
15. 15.🤖 What makes a robot different from a simple machine? (a) it is very big (b) it senses and decides (c) it is made of metal (d) it has a face
16. 16.🏭 A robot arm packs 10 boxes every minute. How many boxes does it pack in 5 minutes?
17. 17.🧩 Which part of a robot stores energy for parts? (a) the frame (b) the motors (c) the controller (d) the battery
18. 18.Which of these shows that the robot is thinking (deciding)? (a) a camera spots a wall (b) a sensor checks distance (c) the gripper closes (d) it compares two numbers
19. 19.🧩 Which part of a robot gives the robot a shape? (a) the gripper (b) the frame (c) the controller (d) the wheels
20. 20.True or false: to stay behind safety lines is safe. (a) False (b) True
21. 21.⚙️ An 8-tooth gear drives a 40-tooth gear. What is the gear ratio (driven teeth ÷ driver teeth)?
22. 22.True or false: “has a signal wire” is true of a servo motor. (a) False (b) True
23. 23.⬛ A line follower runs:
    if (right sees black) { turn right } else if (left sees black) { turn left } else { go forward }
    The left sensor sees black and the right sensor sees black. What does it do? (a) turn left (b) go forward (c) turn right
24. 24.📡 A robot stops if an object is closer than 50 cm. Its distance sensor hears the echo after 7 ms (sound: about 34 cm per ms). Does the robot stop? (a) No (b) Yes
25. 25.🔍 Which sensor helps a robot know a button is pressed? (a) a touch sensor (b) a temperature sensor (c) a distance sensor (d) a gyro sensor
26. 26.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
27. 27.🤖 if (bumper is pressed) { back up and turn right } else { go forward }
    The bumper is pressed. What does the robot do? (a) go forward (b) back up and turn right
28. 28.🚀 Why do we send robots to explore other planets? (a) planets are warm (b) too far and harsh for us (c) it is a game (d) robots like travel
29. 29.🔁 A drawing robot runs:
    repeat 3 { forward 45 cm; turn right 120° }
    How many cm does it drive in all?
30. 30.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
31. 31.📡 A distance sensor sends a sound pulse and hears the echo 19 ms later. Sound travels about 34 cm every millisecond. How far away is the object (in cm)?
32. 32.⚠️ Is it safe to stand in a robot’s path? (a) safe (b) not safe
33. 33.🛞 What is the main difficulty with legs for a robot? (a) they are too cheap (b) harder to balance (c) too fast on floors (d) they never tire
34. 34.🧠 Sense, think or act: “a bumper is pressed”? (a) think (b) sense (c) act
35. 35.📋 A robot’s battery is at 100%. Each “forward 10 cm” uses 2% and each turn uses 1%. It runs:
    repeat 10 { forward 10 cm; turn right 90° }
    What is the battery level at the end (in %)?
36. 36.🤖 A robot is 92 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
37. 37.🌍 Where does a lab sample robot usually work? (a) on a farm (b) in a hospital (c) at home (d) in space
38. 38.🔢 A gear ratio of 3 (driven ÷ driver) means the driven gear turns … (a) 3 times slower (b) 3 times louder (c) 3 times faster (d) 3 times bigger
39. 39.🏆 In a robot team, who writes the code? (a) tester (b) builder (c) team captain (d) programmer
40. 40.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 65 and the right sensor reads 10. Which sensor is over the black line? (a) neither sensor (b) the left sensor (c) both sensors (d) the right sensor

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