Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 27 · 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 motor makes 210 turns a minute with an 8-tooth gear on it. That gear drives a 24-tooth gear. How many turns a minute does the 24-tooth gear make?
2. 2.🏭 A robot arm packs 7 boxes every minute. How many boxes does it pack in 2 minutes?
3. 3.True or false: “a hospital corridor” suits wheels. (a) True (b) False
4. 4.🤖 Is a warehouse robot a robot? (a) not a robot (b) a robot
5. 5.🛑 Why can a moving robot not stop instantly? (a) it likes to slide (b) it is too light (c) it keeps moving a bit (d) brakes are magic
6. 6.🐞 A mistake in a program is called a … (a) bug (b) gear (c) sensor (d) loop
7. 7.🐞 Why change only one thing at a time when debugging? (a) to make it slower (b) to see what fixed it (c) to save paper (d) to confuse others
8. 8.🔢 Gear ratio = driven teeth ÷ … (a) motor volts (b) driver teeth (c) wheel size (d) number of gears
9. 9.🛞 A robot wheel has a radius of 14 cm. Using π = 22/7, what is its circumference (in cm)?
10. 10.🏭 A robot that picks up an item and puts it in another place is called … (a) a talking robot (b) a lawn robot (c) a space robot (d) a pick-and-place robot
11. 11.🔍 Which is the odd one out? (a) take off a safety guard (b) keep recordings private (c) design for all people (d) check AI answers
12. 12.🛑 A robot needs 120 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)?
13. 13.🔁 For a regular shape with n sides, each turn is … (a) 180 degrees always (b) 360 ÷ n degrees (c) n × 360 degrees (d) 90 degrees always
14. 14.⬛ A reading below the threshold means the sensor is over … (a) the sky (b) black (c) water (d) white
15. 15.True or false: a parcel-sorting robot is not a robot. (a) False (b) True
16. 16.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
17. 17.🔢 To debug a robot program, which comes first: “find the buggy line” or “test it again”? (a) test it again (b) find the buggy line
18. 18.📡 A robot stops if an object is closer than 100 cm. Its distance sensor hears the echo after 7 ms (sound: about 34 cm per ms). Does the robot stop? (a) No (b) Yes
19. 19.🚀 A rover drives 5 cm every second for 7 minutes. How many metres does it travel? =
20. 20.🧭 A robot spins 45° every second. How many seconds does it take to turn 180°?
21. 21.⬛ Going too fast round a sharp bend, a line follower may … (a) turn into a car (b) get heavier (c) lose the line (d) grow wheels
22. 22.🏆 Each block a robot stacks scores 25 points, and each time a team member touches the robot, the team loses 10 points. A team stacks 4 blocks and touches the robot 2 times. What is the score?
23. 23.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 60° }
    What should 60 be changed to?
24. 24.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
25. 25.🗺️ A robot is on a grid at (3, 7), facing south. (The first number counts squares across to the east, the second counts squares up to the north.) It runs:
    forward 3
    turn right
    forward 3
    turn right
    forward 1
    turn right
    forward 2
    What is the first number (across) of the square where it stops?
26. 26.🌍 Where does a medicine-cart robot usually work? (a) in a factory (b) in space (c) in a hospital (d) on a farm
27. 27.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 25 and the right sensor reads 15. Which sensor is over the black line? (a) the right sensor (b) the left sensor (c) both sensors (d) neither sensor
28. 28.🧠 Which part of a robot does the “think” job? (a) the frame (b) the wheels (c) the bumper (d) the controller
29. 29.📡 An object is 17 cm from a distance sensor. Sound travels about 34 cm every millisecond. After how many milliseconds does the echo come back?
30. 30.🔍 Which sensor helps a robot feel a bump into a wall? (a) a gyro sensor (b) a camera (c) a light sensor (d) a touch sensor
31. 31.Which of these is safe? (a) open the battery pack (b) stand in a robot’s path (c) wear loose sleeves (d) stay behind safety lines
32. 32.⬛ Why does a light sensor read a LOW number over a black line? (a) black soaks up light (b) black is hot (c) black is wet (d) black is loud
33. 33.🤖 if (distance < 20) { turn right } else { go forward }
    The distance sensor reads 18 cm. What does the robot do? (a) go forward (b) turn right
34. 34.🏭 4 robots each sort 40 parcels an hour. How many parcels do they sort together in 7 hours?
35. 35.True or false: when it compares two numbers, the robot is sensing. (a) True (b) False
36. 36.🏭 Which factory robot puts chips on a board? (a) a welding robot (b) a pick-and-place robot (c) a painting robot (d) an inspection robot
37. 37.🔋 A robot’s battery is at 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
38. 38.🚀 Why do we send robots to explore other planets? (a) planets are warm (b) robots like travel (c) it is a game (d) too far and harsh for us
39. 39.⚙️ A 20-tooth driver gear must make the driven gear turn 5 times slower. How many teeth must the driven gear have?
40. 40.📋 What does “speed = speed + 10” do? (a) sets speed to 10 (b) adds 10 to the speed (c) takes 10 away (d) stops the robot

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