Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 41 · 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 190 cm from a wall and drives towards it at 20 cm per second. It must stop 10 cm before the wall. For how many seconds can it drive?
2. 2.Which job is done by the wheels? (a) picks up objects (b) stores energy for parts (c) move the arms and legs (d) roll it across the floor
3. 3.⬛ Why does a line follower wiggle a little as it drives? (a) it is too cold (b) it keeps fixing its path (c) it is dancing (d) its wheels are square
4. 4.⬛ A line follower runs:
   if (left sees black) { turn left } else if (right sees black) { turn right } else { go forward }
   It checks its sensors 4 times (left–right): white–black, white–white, white–black, white–black. How many times does it turn left?
5. 5.🦾 A servo arm points right at 0°, straight up at 90° and left at 180°. It is set to 90°. Where does the arm point? (a) points up and right (b) points right (c) points straight up (d) points left
6. 6.True or false: a parcel-sorting robot is not a robot. (a) True (b) False
7. 7.⬛ A line follower runs:
   if (right sees black) { turn right } else if (left sees black) { turn left } else { go forward }
   The left sensor sees white and the right sensor sees white. What does it do? (a) go forward (b) turn left (c) turn right
8. 8.⚙️ A 24-tooth driver gear turns a 12-tooth driven gear. The driver turns 2 times. How many times does the driven gear turn?
9. 9.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
10. 10.🤖 Is a fruit-picking robot a robot? (a) not a robot (b) a robot
11. 11.🏭 A welding robot takes 6 seconds for each weld. How many welds does it finish in 4 minutes?
12. 12.📋 A warehouse robot starts with an empty tray and runs:
    pick up 1 box
    pick up 3 boxes
    pick up 1 box
    put down 2 boxes
    pick up 3 boxes
    How many boxes are on its tray at the end?
13. 13.🔦 A light sensor reads 20 over black and 70 over white. A good threshold is halfway between them. What is it?
14. 14.🛑 A robot needs 100 cm to stop once it brakes. It starts braking when its sensor sees a wall 120 cm away. How far from the wall does it stop (in cm)?
15. 15.True or false: a factory robot arm is not a robot. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) write a funny story (b) measure parts exactly (c) cheer up a lonely child (d) make up a new song
17. 17.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
18. 18.⚙️ A 16-tooth driver gear turns an 8-tooth driven gear. The driver turns 4 times. How many times does the driven gear turn?
19. 19.🤝 Who usually does this better — a robot or a person? “judge what is fair” (a) a person (b) a robot
20. 20.🗺️ A robot is on a grid at (1, 3), facing south. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 2
    turn left
    forward 1
    Which way does it face at the end? (a) north (b) west (c) south (d) east
21. 21.True or false: “deep mud” suits legs. (a) True (b) False
22. 22.True or false: a bicycle is not a robot. (a) False (b) True
23. 23.🔍 Which sensor helps a robot measure a turn angle? (a) a temperature sensor (b) a sound sensor (c) a gyro sensor (d) a distance sensor
24. 24.⚙️ DC motor or servo motor: which one spins round and round? (a) a servo motor (b) a DC motor
25. 25.🛑 A faster robot needs a … distance to stop. (a) longer (b) negative (c) zero (d) shorter
26. 26.🛞 A motor’s 10-tooth gear drives a 20-tooth gear on the wheel axle. The wheels have a diameter of 35 cm (use π = 22/7). The motor turns 6 times. How far does the robot roll (in cm)?
27. 27.🏭 A robot arm packs 2 boxes every minute. How many boxes does it pack in 4 minutes?
28. 28.🔍 Which sensor helps a robot read a QR code? (a) a light sensor (b) a temperature sensor (c) a gyro sensor (d) a camera
29. 29.🔢 To debug a robot program, which comes first: “test it again” or “fix one thing”? (a) fix one thing (b) test it again
30. 30.📋 A robot’s battery is at 100%. Each “forward 10 cm” uses 2% and each turn uses 1%. It runs:
    repeat 4 { forward 10 cm; turn right 90° }
    What is the battery level at the end (in %)?
31. 31.🛑 A robot is 130 cm from a wall and drives towards it at 20 cm per second. It must stop 10 cm before the wall. For how many seconds can it drive?
32. 32.📋 A warehouse robot starts with an empty tray and runs:
    pick up 1 box
    pick up 4 boxes
    put down 1 box
    How many boxes are on its tray at the end?
33. 33.⬛ Why does a light sensor read a LOW number over a black line? (a) black is loud (b) black is wet (c) black is hot (d) black soaks up light
34. 34.Which of these suits propellers? (a) a flat road (b) flying over a field (c) stepping over wide gaps (d) loose sand dunes
35. 35.🛞 A robot wheel has a radius of 7 cm. Using π = 22/7, what is its circumference (in cm)?
36. 36.⚙️ A motor makes 150 turns a minute with a 15-tooth gear on it. That gear drives a 45-tooth gear. How many turns a minute does the 45-tooth gear make?
37. 37.🔍 Which sensor is just a tiny switch pressed by a bump? (a) a touch sensor (b) a gyro sensor (c) a sound sensor (d) a camera
38. 38.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
39. 39.Which of these is a job robots do well? (a) cheer up a lonely child (b) plan a birthday party (c) weld 1000 car doors (d) make up a new song
40. 40.🤖 Is a wind-up toy a robot? (a) a robot (b) not a robot

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