Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 531 · 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.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
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 anticlockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) clockwise (b) anticlockwise
4. 4.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster and weaker
5. 5.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) the same direction (c) in opposite directions (d) one up, one down
6. 6.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
7. 7.⚙️ 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
8. 8.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
9. 9.⚙️ A 24-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
10. 10.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
11. 11.⚙️ 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
12. 12.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
13. 13.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
14. 14.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) pins (c) teeth (d) tyres
15. 15.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
16. 16.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
17. 17.⚙️ 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
18. 18.⚙️ A 40-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
19. 19.⚙️ 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
20. 20.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
21. 21.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) idler gear (c) driven gear (d) tyre
22. 22.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
23. 23.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
24. 24.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
25. 25.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) at the same speed (c) faster but weaker (d) not at all
26. 26.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
27. 27.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
28. 28.⚙️ 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
29. 29.⚙️ 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
30. 30.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
31. 31.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
32. 32.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ Pulley A turns clockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) anticlockwise (b) clockwise
34. 34.⚙️ A 15-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
35. 35.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
36. 36.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
37. 37.⚙️ 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
38. 38.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
39. 39.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
40. 40.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True

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