Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 144 · 40 questions

Robot tip (Trade speed for strength): Meshed gears turn opposite ways; in a row, odd-numbered gears turn like gear 1. Small drives big: slower, stronger. Big drives small: faster, weaker. The gear with fewer teeth turns faster. Open belt: same direction. Crossed belt: opposite direction.

1. 1.⚙️ Pulley A turns anticlockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) anticlockwise (b) clockwise
2. 2.⚙️ A robot fan must spin very fast. The motor’s driver gear meshes with a small gear. What kind of driver gear works best? (a) a big driver gear (b) a small driver gear
3. 3.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
4. 4.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) at the same speed (c) faster but weaker (d) slower but stronger
5. 5.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) idler gear (d) driver gear
6. 6.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
7. 7.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
8. 8.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
9. 9.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
10. 10.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
11. 11.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
12. 12.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) tyres (c) teeth (d) spokes
13. 13.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
14. 14.⚙️ A robot arm must lift a heavy load slowly. The motor’s driver gear meshes with a big gear. What kind of driver gear works best? (a) a small driver gear (b) a big driver gear
15. 15.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) they do not turn (c) the same direction (d) in opposite directions
16. 16.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
17. 17.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
18. 18.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
19. 19.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
20. 20.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
21. 21.⚙️ A 24-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
22. 22.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
23. 23.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
24. 24.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
25. 25.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
26. 26.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
27. 27.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
28. 28.⚙️ 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
29. 29.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) not at all (c) slower but stronger (d) at the same speed
30. 30.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
31. 31.⚙️ A 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
32. 32.⚙️ 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
33. 33.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
34. 34.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
35. 35.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
36. 36.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
37. 37.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
38. 38.⚙️ A 20-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
39. 39.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ A 16-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed

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