Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 8 · 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 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
   turn left
   forward 2
   What is the first number (across) of the square where it stops?
2. 2.🔁 A drawing robot runs:
   repeat 8 { forward 40 cm; turn right 45° }
   How many cm does it drive in all?
3. 3.🧭 How many degrees is a full turn? (a) 90° (b) 180° (c) 100° (d) 360°
4. 4.True or false: the frame move the arms and legs. (a) False (b) True
5. 5.🏭 What carries parts from one robot to the next in a factory? (a) a kite (b) a ladder (c) a conveyor belt (d) a garden hose
6. 6.🛞 Both wheels of a two-wheeled robot turn forward. The left wheel turns at 100 turns a minute and the right wheel at 40 turns a minute. What does the robot do? (a) goes straight forward (b) curves to the right (c) curves to the left
7. 7.⬛ A line follower runs:
   if (left < 40) { turn left } else if (right < 40) { turn right } else { go forward }
   The left sensor reads 25 and the right sensor reads 10. What does it do? (a) turn right (b) turn left (c) go forward
8. 8.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
9. 9.🦾 A servo moves from 80° to 40°. How many degrees does it turn?
10. 10.🤖 if (distance < 10) { turn right } else { go forward }
    The distance sensor reads 18 cm. What does the robot do? (a) go forward (b) turn right
11. 11.📋 A robot’s battery is at 100%. Each “forward 10 cm” uses 4% and each turn uses 2%. It runs:
    repeat 3 { forward 10 cm; turn right 90° }
    What is the battery level at the end (in %)?
12. 12.🛞 A robot’s wheels have a diameter of 7 cm. Using π = 22/7, how far does the robot roll when the wheels turn 5 times (in cm)?
13. 13.True or false: the motors move the arms and legs. (a) True (b) False
14. 14.🔁 A drawing robot runs:
    repeat 5 { forward 85 cm; turn right 72° }
    Which shape does it draw? (a) hexagon (b) square (c) triangle (d) pentagon
15. 15.🔢 Gear ratio = driven teeth ÷ … (a) number of gears (b) motor volts (c) wheel size (d) driver teeth
16. 16.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
17. 17.📡 A distance sensor sends a sound pulse and hears the echo 4 ms later. Sound travels about 34 cm every millisecond. How far away is the object (in cm)?
18. 18.🛞 A robot has one motor on its left wheel and one on its right wheel. The left motor is stopped and the right motor is stopped. What does the robot do? (a) goes straight back (b) spins right on the spot (c) goes straight forward (d) stays still
19. 19.🤖 if (distance < 15) { stop } else if (light < 30) { turn left } else { go forward }
    The distance is 26 cm and the light reading is 75. What does the robot do? (a) turn left (b) stop (c) go forward
20. 20.🏭 Which job is a factory robot arm best at? (a) one task again and again (b) telling jokes (c) making new friends (d) choosing a new design
21. 21.🔁 A drawing robot runs:
    repeat 3 { forward 75 cm; turn right 120° }
    Which shape does it draw? (a) hexagon (b) square (c) pentagon (d) triangle
22. 22.🚀 A rover drives 1 cm every second for 10 minutes. How many metres does it travel? =
23. 23.True or false: the sensors make the wheels turn. (a) True (b) False
24. 24.🦾 A servo moves from 60° to 100°. How many degrees does it turn?
25. 25.🔢 A gear ratio of 3 (driven ÷ driver) means the driven gear turns … (a) 3 times slower (b) 3 times bigger (c) 3 times faster (d) 3 times louder
26. 26.True or false: when the gripper closes, the robot is thinking (deciding). (a) False (b) True
27. 27.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
28. 28.⚙️ 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 big driver gear (b) a small driver gear
29. 29.🛞 A robot has one motor on its left wheel and one on its right wheel. The left motor is stopped and the right motor runs forward. What does the robot do? (a) spins left on the spot (b) stays still (c) goes straight back (d) turns left
30. 30.🛑 A robot needs 115 cm to stop once it brakes. It starts braking when its sensor sees a wall 140 cm away. How far from the wall does it stop (in cm)?
31. 31.⚙️ A 36-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
32. 32.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) °C (d) mAh
33. 33.🛞 Which way of moving suits this best: “flying over a field”? (a) wheels (b) legs (c) tracks (d) propellers
34. 34.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
35. 35.🛞 A robot wheel has a diameter of 35 cm. Using π = 22/7, what is its circumference (in cm)?
36. 36.🛞 A robot’s wheels have a diameter of 10 cm. Using π = 3.14, how far does the robot roll when the wheels turn 2 times (in cm)? =
37. 37.Which of these is a job people do better? (a) sort parcels all night (b) repeat one task all day (c) spray crops evenly (d) judge what is fair
38. 38.🧭 A robot keeps turning right by 40° at a time. How many turns make one full circle?
39. 39.🌍 Where does a car-painting robot usually work? (a) in space (b) at home (c) on a farm (d) in a factory
40. 40.🤖 if (distance < 15) { turn right } else { go forward }
    The distance sensor reads 21 cm. What does the robot do? (a) go forward (b) turn right

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