Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 116 · 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.⚙️ 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
3. 3.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
4. 4.⚙️ 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 big driver gear (b) a small driver gear
5. 5.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) not at all (c) at the same speed (d) faster and weaker
6. 6.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
7. 7.⚙️ 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
8. 8.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) driven gear (c) idler gear (d) tyre
9. 9.⚙️ 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
10. 10.⚙️ A 16-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
11. 11.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
12. 12.⚙️ A 10-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
13. 13.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
14. 14.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) not at all (c) slower but stronger (d) at the same speed
15. 15.⚙️ 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
16. 16.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
17. 17.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
18. 18.⚙️ A 10-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
19. 19.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
20. 20.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) one up, one down (c) they do not turn (d) in opposite directions
21. 21.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
22. 22.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
23. 23.⚙️ 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
24. 24.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
25. 25.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
26. 26.⚙️ A 30-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
27. 27.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
28. 28.⚙️ A 16-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
29. 29.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
30. 30.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
31. 31.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
32. 32.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
33. 33.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
34. 34.⚙️ A 40-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
35. 35.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
36. 36.⚙️ 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
37. 37.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
38. 38.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
39. 39.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
40. 40.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) teeth (c) spokes (d) pins

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