Robotics Worksheet: Final Test

Robotics lesson 30: Final robotics test · Set 25 · 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: to explain how it decides is not a responsible way to use robots and AI. (a) False (b) True
2. 2.⬛ In a two-sensor line follower, both sensors see white. Where is the line? (a) under the right sensor (b) far behind it (c) under the left sensor (d) between the two sensors
3. 3.🗺️ A robot is on a grid at (7, 7), 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
   turn right
   forward 1
   turn left
   forward 1
   What is the first number (across) of the square where it stops?
4. 4.📡 An object is 170 cm from a distance sensor. Sound travels about 34 cm every millisecond. After how many milliseconds does the echo come back?
5. 5.True or false: when it plans the next move, the robot is acting. (a) False (b) True
6. 6.🤖 What does an “if” let a robot do? (a) go faster always (b) skip all sensors (c) charge itself (d) choose using a sensor
7. 7.🛑 A robot needs 5 cm to stop once it brakes. It starts braking when its sensor sees a wall 90 cm away. How far from the wall does it stop (in cm)?
8. 8.🔦 A light sensor reads 20 over black and 90 over white. A good threshold is halfway between them. What is it?
9. 9.⬛ A line follower runs:
   if (left < 40) { turn left } else if (right < 40) { turn right } else { go forward }
   The left sensor reads 45 and the right sensor reads 15. What does it do? (a) turn left (b) turn right (c) go forward
10. 10.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
11. 11.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a power cable (c) a wind-up key (d) a solar panel
12. 12.Which of these is not safe? (a) test with an adult near (b) learn the stop button (c) switch off before fixing (d) reach into a moving arm
13. 13.🌍 Where does a car-welding robot arm usually work? (a) in a warehouse (b) at home (c) in a factory (d) under the sea
14. 14.🤖 A robot is 39 cm from a wall. It runs:
    while (distance > 20) { forward 10 cm }
    stop
    How many times does it move forward?
15. 15.🛞 How does a two-wheeled robot with no steering turn? (a) it jumps (b) it stops for ever (c) it uses a sail (d) one wheel runs faster
16. 16.🔢 To climb a steep ramp, a robot needs a gear ratio that is … (a) zero (b) small (fast, weak) (c) never important (d) big (slow and strong)
17. 17.🤖 if (bumper is pressed) { back up and turn right } else { go forward }
    The bumper is pressed. What does the robot do? (a) go forward (b) back up and turn right
18. 18.⬛ Going too fast round a sharp bend, a line follower may … (a) grow wheels (b) turn into a car (c) get heavier (d) lose the line
19. 19.Which of these is not safe? (a) stay behind safety lines (b) fix it while it runs (c) switch off before fixing (d) keep hair tied back
20. 20.🗺️ On our grids, the square (3, 5) means … (a) 5 across and 3 up (b) 3 down and 5 left (c) 3 across and 5 up (d) 35 squares away
21. 21.🚀 What do we call a robot car that explores a planet or the Moon? (a) a submarine (b) a drone (c) a tractor (d) a rover
22. 22.🗺️ A robot faces north and moves forward 1 square. Which number goes up by 1? (a) both numbers (b) the first one (c) neither number (d) the second (up) one
23. 23.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
24. 24.📋 A robot starts on the start line of a straight track and runs:
    forward 25 cm
    forward 45 cm
    back 25 cm
    forward 35 cm
    forward 35 cm
    How many cm in front of the start line is it now?
25. 25.🔍 Which is the odd one out? (a) a planet rover (b) a factory robot arm (c) a hand-pushed trolley (d) a robot lawn mower
26. 26.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 20 and the right sensor reads 35. Which sensor is over the black line? (a) the left sensor (b) both sensors (c) neither sensor (d) the right sensor
27. 27.🔍 Which sensor helps a robot warn if motors get hot? (a) a touch sensor (b) a camera (c) a gyro sensor (d) a temperature sensor
28. 28.🛡️ Responsible or not: to test robots for safety? (a) not responsible (b) responsible
29. 29.🛞 Which way of moving suits this best: “crossing stepping-stones”? (a) propellers (b) wheels (c) tracks (d) legs
30. 30.🏆 Why keep notes of every test run? (a) to learn what works (b) to fill pages (c) to show off (d) to slow the team
31. 31.📋 A robot program runs:
    speed = 20
    speed = speed + 5
    speed = speed + 15
    speed = speed − 10
    What is the speed at the end?
32. 32.⬛ A line follower runs:
    if (left < 40) { turn left } else if (right < 40) { turn right } else { go forward }
    The left sensor reads 70 and the right sensor reads 55. What does it do? (a) go forward (b) turn left (c) turn right
33. 33.🏭 Why do car factories use robot arms for welding? (a) fast, exact and tireless (b) they never move (c) they are cheap toys (d) they like heat
34. 34.🏥 A hospital robot delivers medicine to 7 rooms, one trip for each room. Each trip takes 8 minutes. How many minutes do all the trips take?
35. 35.🛞 Which way of moving suits this best: “moving under water”? (a) legs (b) wheels (c) tracks (d) propellers
36. 36.🧠 Sense, think or act: “a bumper is pressed”? (a) think (b) sense (c) act
37. 37.Which of these is not a robot? (a) a fruit-picking robot (b) a floor-cleaning robot (c) a line-follower robot (d) a skateboard
38. 38.True or false: “a flat road” suits wheels. (a) True (b) False
39. 39.🐞 This program should draw a regular pentagon (5 equal sides), but the shape does not close:
    repeat 5 { forward 10 cm; turn right 120° }
    What should 120 be changed to?
40. 40.🛑 A robot is 40 cm from a wall and drives towards it at 10 cm per second. It must stop 10 cm before the wall. For how many seconds can it drive?

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