Robotics Worksheet: Part 2 Test

Robotics lesson 20: Part 2 test: how robots move and sense · Set 262 · 40 questions

Robot tip (Find the topic, use the formula): Find the topic: moving, motors, gears, wheels, sensors, echo, line or gyro. Use the rule: teeth × turns; circumference × turns; 17 cm per ms of echo; below the threshold = black; right adds degrees. Check: put your answer back into the rule.

1. 1.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
2. 2.🧭 A robot faces north. It does: turn right, turn right, turn around, turn right. Which way does it face now? (a) west (b) south (c) north (d) east
3. 3.⚙️ A 36-tooth driver gear turns a 12-tooth driven gear. The driver turns 7 times. How many times does the driven gear turn?
4. 4.🛞 A robot’s wheels have a diameter of 14 cm. Using π = 22/7, how many full turns must they make to roll 440 cm?
5. 5.⚙️ A motor changes electrical energy into … (a) water (b) movement (c) light (d) sound only
6. 6.📡 A robot is 110 cm from a wall and drives straight at it at 5 cm per second. How far from the wall is it after 5 seconds (in cm)?
7. 7.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 70 and the right sensor reads 90. Which sensor is over the black line? (a) the right sensor (b) the left sensor (c) neither sensor (d) both sensors
8. 8.🔍 Which sensor helps a robot stop before a wall? (a) a touch sensor (b) a light sensor (c) a camera (d) a distance sensor
9. 9.🛞 A robot’s wheels have a diameter of 20 cm. Using π = 3.14, how far does the robot roll when the wheels turn 2 times (in cm)? =
10. 10.🛞 Which way of moving suits this best: “a hospital corridor”? (a) propellers (b) legs (c) wheels (d) tracks
11. 11.⬛ In a two-sensor line follower, both sensors see white. Where is the line? (a) far behind it (b) between the two sensors (c) under the right sensor (d) under the left sensor
12. 12.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
13. 13.🛞 Both wheels of a two-wheeled robot turn forward. The left wheel turns at 10 turns a minute and the right wheel at 60 turns a minute. What does the robot do? (a) curves to the right (b) goes straight forward (c) curves to the left
14. 14.Which of these suits legs? (a) a field of tall boulders (b) a smooth classroom floor (c) soft snow (d) a hospital corridor
15. 15.🛞 A robot has one motor on its left wheel and one on its right wheel. The left motor runs forward and the right motor runs backward. What does the robot do? (a) spins left on the spot (b) stays still (c) goes straight forward (d) spins right on the spot
16. 16.📡 A robot is 230 cm from a wall and drives straight at it at 5 cm per second. How far from the wall is it after 9 seconds (in cm)?
17. 17.🧭 How many degrees is a full turn? (a) 360° (b) 100° (c) 180° (d) 90°
18. 18.⚙️ A 30-tooth driver gear turns a 15-tooth driven gear. The driver turns 2 times. How many times does the driven gear turn?
19. 19.🧭 What does a gyro help a robot do? (a) hear claps (b) turn by exact angles (c) see colours (d) smell smoke
20. 20.🔍 Which sensor helps a robot measure a turn angle? (a) a touch sensor (b) a camera (c) a temperature sensor (d) a gyro sensor
21. 21.🛞 Which way of moving suits this best: “loose sand dunes”? (a) tracks (b) wheels (c) propellers (d) legs
22. 22.🛞 A robot’s wheels have a diameter of 8 cm. Using π = 3.14, how far does the robot roll when the wheels turn 1 time (in cm)? =
23. 23.🔦 A robot has a left and a right light sensor. Below 50 means black. The left sensor reads 80 and the right sensor reads 10. Which sensor is over the black line? (a) neither sensor (b) the left sensor (c) the right sensor (d) both sensors
24. 24.🧭 A robot should turn right 180°, but its gyro shows it turned 190°. How many degrees must it turn back to the left?
25. 25.Which of these suits propellers? (a) flying over a field (b) deep mud (c) a flat road (d) soft snow
26. 26.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) they do not turn (d) in opposite directions
27. 27.⚙️ A 10-tooth driver gear must make the driven gear turn 4 times slower. How many teeth must the driven gear have?
28. 28.🛞 A robot wheel has a diameter of 42 cm. Using π = 22/7, what is its circumference (in cm)?
29. 29.🛞 A robot’s wheels have a diameter of 21 cm. Using π = 22/7, how far does the robot roll when the wheels turn 8 times (in cm)?
30. 30.🔍 Why do robots need sensors? (a) to know their world (b) to use more power (c) to be heavier (d) to look colourful
31. 31.⚙️ A 12-tooth driver gear must make the driven gear turn 4 times slower. How many teeth must the driven gear have?
32. 32.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
33. 33.True or false: “drives the wheels” is true of a servo motor. (a) False (b) True
34. 34.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
35. 35.📡 A robot stops if an object is closer than 100 cm. Its distance sensor hears the echo after 5 ms (sound: about 34 cm per ms). Does the robot stop? (a) No (b) Yes
36. 36.🧭 A robot spins 30° every second. How many seconds does it take to turn 60°?
37. 37.⚙️ Pulley A turns clockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) clockwise (b) anticlockwise
38. 38.Which of these suits wheels? (a) a flat road (b) deep mud (c) stepping over wide gaps (d) soft snow
39. 39.🔍 Which sensor helps a robot measure how far a box is? (a) a distance sensor (b) a sound sensor (c) a light sensor (d) a temperature sensor
40. 40.🔦 A light sensor reads below 30 over a black line and above 30 over the white floor. It reads 22. What is under the sensor? (a) the black line (b) the white floor

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