Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 45 · 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.True or false: “has a signal wire” is true of a servo motor. (a) False (b) True
2. 2.🤖 What does an “if” let a robot do? (a) choose using a sensor (b) go faster always (c) charge itself (d) skip all sensors
3. 3.🔦 A light sensor reads 40 over black and 70 over white. A good threshold is halfway between them. What is it?
4. 4.🤖 A robot is 108 cm from a wall. It runs:
   while (distance > 20) { forward 10 cm }
   stop
   How many times does it move forward?
5. 5.True or false: to test with an adult near is not safe. (a) True (b) False
6. 6.🌍 Where does a planet rover usually work? (a) in a warehouse (b) in a factory (c) in space (d) on a farm
7. 7.📋 A warehouse robot starts with an empty tray and runs:
   pick up 2 boxes
   pick up 2 boxes
   pick up 1 box
   How many boxes are on its tray at the end?
8. 8.🛞 A robot has one motor on its left wheel and one on its right wheel. The left motor runs backward and the right motor runs forward. What does the robot do? (a) spins left on the spot (b) goes straight forward (c) stays still (d) turns left
9. 9.🔁 Why do we use a loop to draw a square? (a) the same steps repeat (b) to make it crash (c) squares need 5 sides (d) loops are colourful
10. 10.🔁 A drawing robot runs:
    repeat 4 { forward 90 cm; turn right 90° }
    Which shape does it draw? (a) square (b) triangle (c) octagon (d) hexagon
11. 11.⬛ A line follower runs:
    if (left sees black) { turn left } else if (right sees black) { turn right } else { go forward }
    The left sensor sees white and the right sensor sees white. What does it do? (a) turn left (b) go forward (c) turn right
12. 12.🤖 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
13. 13.Which of these is a job robots do well? (a) invent a new game (b) measure parts exactly (c) write a funny story (d) comfort a sad friend
14. 14.🔍 Which is the odd one out? (a) a weeding robot (b) a crop-spraying drone (c) a germ-killing UV robot (d) a fruit-picking robot
15. 15.📋 A warehouse robot starts with an empty tray and runs:
    pick up 1 box
    pick up 1 box
    pick up 1 box
    pick up 3 boxes
    How many boxes are on its tray at the end?
16. 16.⚙️ A 15-tooth driver gear turns a 45-tooth driven gear. The driven gear turns 5 times. How many times did the driver turn?
17. 17.🔍 Which sensor helps a robot warn if motors get hot? (a) a touch sensor (b) a temperature sensor (c) a distance sensor (d) a sound sensor
18. 18.🏭 A robot arm puts caps on 9 bottles each minute. How many minutes does it take to cap 108 bottles?
19. 19.🌍 Where does a car-welding robot arm usually work? (a) at home (b) in a warehouse (c) in a factory (d) in space
20. 20.🛞 A robot wheel has a radius of 7 cm. Using π = 22/7, what is its circumference (in cm)?
21. 21.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
22. 22.⚠️ What should you do before fixing a robot? (a) speed it up (b) hold its wheels (c) switch it off (d) keep it running
23. 23.🛑 A robot is 40 cm from a wall and drives towards it at 10 cm per second. It must stop 20 cm before the wall. For how many seconds can it drive?
24. 24.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
25. 25.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 40 and the right sensor reads 60. Which sensor is over the black line? (a) the left sensor (b) neither sensor (c) both sensors (d) the right sensor
26. 26.🔦 A light sensor reads below 50 over a black line and above 50 over the white floor. It reads 56. What is under the sensor? (a) the black line (b) the white floor
27. 27.🏆 A team’s robot scores 42, 86 and 48 in three rounds. Only the best round counts. What is the team’s score?
28. 28.🧠 Which parts do the “act” job? (a) the motors (b) the program (c) the camera (d) the sensors
29. 29.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) explodes (c) goes back to its dock (d) turns into a car
30. 30.True or false: “plan a birthday party” is a job people do better. (a) False (b) True
31. 31.📡 An object is 85 cm from a distance sensor. Sound travels about 34 cm every millisecond. After how many milliseconds does the echo come back?
32. 32.⚙️ DC motor or servo motor: which one drives the wheels? (a) a servo motor (b) a DC motor
33. 33.🔍 Which is the odd one out? (a) check wires before use (b) keep hair tied back (c) charge on a hard surface (d) reach into a moving arm
34. 34.🚀 A planet rover drives 10 cm every second. How far does it go in 20 seconds (in cm)?
35. 35.True or false: the wheels roll it across the floor. (a) True (b) False
36. 36.Which job needs a touch sensor? (a) read a QR code (b) spot a red ball (c) know a button is pressed (d) measure a turn angle
37. 37.🛑 Why can a moving robot not stop instantly? (a) it likes to slide (b) brakes are magic (c) it is too light (d) it keeps moving a bit
38. 38.Which of these suits wheels? (a) hovering over a roof (b) crossing stepping-stones (c) a smooth classroom floor (d) moving under water
39. 39.🤝 Who usually does this better — a robot or a person? “repeat one task all day” (a) a robot (b) a person
40. 40.🧩 Which parts are like the robot’s eyes and ears? (a) the motors (b) the frame (c) the wheels (d) the sensors

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