Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 40 · 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 light sensor reads below 30 over a black line and above 30 over the white floor. It reads 7. What is under the sensor? (a) the black line (b) the white floor
2. 2.Which job is done by the frame? (a) holds all parts together (b) must be charged again (c) decides what to do next (d) make the wheels turn
3. 3.⚙️ A 15-tooth gear drives a 30-tooth gear. What is the gear ratio (driven teeth ÷ driver teeth)?
4. 4.🚀 A planet rover drives 10 cm every second. How far does it go in 25 seconds (in cm)?
5. 5.🗺️ A robot is on a grid at (7, 4), facing west. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
   forward 1
   turn left
   forward 3
   turn left
   forward 2
   turn left
   forward 2
   On which square does it stop? (a) (3, 8) (b) (9, 3) (c) (8, 3) (d) (8, 1)
6. 6.🔁 A drawing robot runs:
   repeat 3 { repeat 4 { forward 10 cm; turn right 90° } }
   How many cm does it drive in all?
7. 7.🔁 A robot must draw a regular pentagon (5 equal sides):
   repeat 5 { forward 40 cm; turn right ?° }
   What number goes in place of “?”
8. 8.⚙️ A 30-tooth driver gear turns a 10-tooth driven gear. The driver turns 10 times. How many times does the driven gear turn?
9. 9.📋 A robot starts on the start line of a straight track and runs:
   forward 5 cm
   forward 45 cm
   back 40 cm
   How many cm in front of the start line is it now?
10. 10.📡 A distance sensor sends a sound pulse and hears the echo 6 ms later. Sound travels about 34 cm every millisecond. How far away is the object (in cm)?
11. 11.True or false: to stand in a robot’s path is not safe. (a) True (b) False
12. 12.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) charge it again (d) give it to an adult
13. 13.🔦 A light sensor reads 30 over black and 70 over white. A good threshold is halfway between them. What is it?
14. 14.🤖 Is a garden swing a robot? (a) a robot (b) not a robot
15. 15.🤖 A robot is 86 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
16. 16.⚠️ A robot arm suddenly moves towards you. What should you do? (a) grab the arm (b) push it hard (c) step back, call an adult (d) stand still in front
17. 17.🧩 Which part of a robot tell it what is around? (a) the frame (b) the battery (c) the motors (d) the sensors
18. 18.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
19. 19.🤖 Must a robot look like a human? (a) yes, always (b) only in films (c) yes, with two legs (d) no, any shape works
20. 20.🏭 A welding robot takes 20 seconds for each weld. How many welds does it finish in 4 minutes?
21. 21.True or false: a garden swing is not a robot. (a) False (b) True
22. 22.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
23. 23.🏆 A robot scores 35, 57 and 59 points in three rounds. All rounds count. What is the total?
24. 24.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
25. 25.📡 A robot stops if an object is closer than 50 cm. Its distance sensor hears the echo after 2 ms (sound: about 34 cm per ms). Does the robot stop? (a) Yes (b) No
26. 26.🔍 Which sensor is just a tiny switch pressed by a bump? (a) a camera (b) a sound sensor (c) a touch sensor (d) a gyro sensor
27. 27.🛞 A robot wheel has a radius of 21 cm. Using π = 22/7, what is its circumference (in cm)?
28. 28.📦 How do warehouse robots help? (a) drink the oil (b) write the parcels (c) paint the roof (d) move shelves to workers
29. 29.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
30. 30.True or false: when an LED lights up, the robot is acting. (a) True (b) False
31. 31.🏭 Which factory robot puts items in boxes? (a) a pick-and-place robot (b) a packing robot (c) a painting robot (d) a welding robot
32. 32.🏆 Your robot fails in a round. What is the best thing to do? (a) blame a teammate (b) find the cause, retry (c) break the robot (d) give up at once
33. 33.True or false: a hand-pushed trolley is a robot. (a) False (b) True
34. 34.🏭 5 robots each sort 15 parcels an hour. How many parcels do they sort together in 6 hours?
35. 35.🛞 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)? =
36. 36.True or false: to follow a black line, use a light sensor. (a) False (b) True
37. 37.⬛ Left sensor sees black, right sensor sees white. Which way should a line follower turn? (a) nowhere (b) left (c) right (d) backwards
38. 38.⬛ 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 black. What does it do? (a) turn left (b) turn right (c) go forward
39. 39.🗺️ A robot is on a grid at (3, 1), 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
    What is the first number (across) of the square where it stops?
40. 40.True or false: to do all the work alone is good teamwork. (a) False (b) True

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