Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 34 · 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 50 cm to stop once it brakes. It starts braking when its sensor sees a wall 100 cm away. How far from the wall does it stop (in cm)?
2. 2.🏭 A robot arm puts caps on 5 bottles each minute. How many minutes does it take to cap 30 bottles?
3. 3.Which job is done by the motors? (a) stores energy for parts (b) move the arms and legs (c) tell it what is around (d) measure light and sound
4. 4.🛞 A motor’s 10-tooth gear drives a 20-tooth gear on the wheel axle. The wheels have a diameter of 28 cm (use π = 22/7). The motor turns 4 times. How far does the robot roll (in cm)?
5. 5.🔢 To debug a robot program, which comes first: “fix one thing” or “run the program”? (a) fix one thing (b) run the program
6. 6.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
7. 7.🗺️ A robot is on a grid at (2, 2), facing east. (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
   turn right
   forward 2
   turn right
   forward 3
   What is the first number (across) of the square where it stops?
8. 8.🔁 A drawing robot runs:
   repeat 6 { forward 100 cm; turn right 60° }
   Which shape does it draw? (a) hexagon (b) square (c) pentagon (d) octagon
9. 9.🏥 A hospital robot delivers medicine to 2 rooms, one trip for each room. Each trip takes 12 minutes. How many minutes do all the trips take?
10. 10.🤖 Is a pulley a robot? (a) not a robot (b) a robot
11. 11.🛞 A small free-turning wheel that only helps a robot balance is called … (a) a gear (b) a track (c) a caster wheel (d) a servo
12. 12.Which job needs a gyro sensor? (a) know a button is pressed (b) measure a turn angle (c) read a QR code (d) start on a hand clap
13. 13.🛑 A robot is 450 cm from a wall. It drives at 50 cm per second until it is 50 cm away, then slows to 10 cm per second and stops when it is 20 cm away. How many seconds does the whole trip take?
14. 14.🤖 if (bumper is pressed) { back up and turn right } else { go forward }
    The bumper is pressed. What does the robot do? (a) back up and turn right (b) go forward
15. 15.🔁 For a regular shape with n sides, each turn is … (a) 360 ÷ n degrees (b) n × 360 degrees (c) 180 degrees always (d) 90 degrees always
16. 16.🗺️ A robot is on a grid at (2, 5), facing south. (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 left
    forward 1
    turn left
    forward 1
    What is the first number (across) of the square where it stops?
17. 17.🔁 A robot must draw a regular square (4 equal sides):
    repeat 4 { forward 100 cm; turn right ?° }
    What number goes in place of “?”
18. 18.Which of these shows that the robot is acting? (a) a mic hears a clap (b) it decides to stop (c) it decides to turn (d) an LED lights up
19. 19.True or false: when a sensor reads light, the robot is thinking (deciding). (a) False (b) True
20. 20.🔁 A drawing robot runs:
    repeat 5 { forward 80 cm; turn right 72° }
    Which shape does it draw? (a) square (b) octagon (c) hexagon (d) pentagon
21. 21.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) tyre (d) driven gear
22. 22.📡 Why do we halve the echo’s total path? (a) sound is slow (b) to make it smaller (c) it goes there and back (d) the sensor is half
23. 23.🔦 A light sensor reads below 30 over a black line and above 30 over the white floor. It reads 52. What is under the sensor? (a) the black line (b) the white floor
24. 24.True or false: “moving under water” suits propellers. (a) True (b) False
25. 25.🛞 A motor’s 10-tooth gear drives a 30-tooth gear on the wheel axle. The wheels have a diameter of 14 cm (use π = 22/7). The motor turns 15 times. How far does the robot roll (in cm)?
26. 26.🧭 How many degrees is a full turn? (a) 100° (b) 180° (c) 90° (d) 360°
27. 27.🧩 Which parts are like the robot’s eyes and ears? (a) the motors (b) the frame (c) the sensors (d) the wheels
28. 28.True or false: the gripper measure light and sound. (a) False (b) True
29. 29.📋 A robot starts on the start line of a straight track and runs:
    forward 30 cm
    forward 10 cm
    back 40 cm
    forward 35 cm
    How many cm in front of the start line is it now?
30. 30.🔢 To make a robot vacuum avoid a chair, what comes right after “the controller reads it”? (a) the motors turn it (b) it decides to turn (c) it drives on (d) the bumper is pressed
31. 31.🏭 A robot arm packs 10 boxes every minute. How many boxes does it pack in 10 minutes?
32. 32.🔁 A drawing robot runs:
    repeat 4 { forward 75 cm; turn right 90° }
    How many cm does it drive in all?
33. 33.⬛ 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) go forward (b) turn left (c) turn right
34. 34.🛡️ Responsible or not: to scare pets with a robot? (a) not responsible (b) responsible
35. 35.Which of these is a robot? (a) a warehouse robot (b) a pulley (c) a ceiling fan (d) a hammer
36. 36.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 13 cm. What does the robot do? (a) go forward (b) turn right
37. 37.🌍 Where does a space-station arm usually work? (a) in a hospital (b) in a factory (c) on a farm (d) in space
38. 38.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 20 cm and the light reading is 10. What does the robot do? (a) go forward (b) turn left (c) stop
39. 39.🔍 Which is the odd one out? (a) a box-stacking robot (b) a parcel-sorting robot (c) a window-cleaning robot (d) a shelf-moving robot
40. 40.🤖 if (bumper is pressed) { back up and turn left } else { go forward }
    The bumper is pressed. What does the robot do? (a) go forward (b) back up and turn left

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