Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 123 · 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.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
2. 2.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
3. 3.⚙️ 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
4. 4.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
5. 5.⚙️ 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
6. 6.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) not at all (c) at the same speed (d) faster but weaker
7. 7.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
8. 8.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
9. 9.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
10. 10.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
11. 11.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) the same direction (c) one up, one down (d) in opposite directions
12. 12.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
13. 13.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
14. 14.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
15. 15.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
16. 16.⚙️ 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 small driver gear (b) a big driver gear
17. 17.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
18. 18.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
19. 19.⚙️ A 36-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
20. 20.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
21. 21.⚙️ A 30-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
22. 22.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
23. 23.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
24. 24.⚙️ A 12-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
25. 25.⚙️ A 20-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
26. 26.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
27. 27.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) tyre (c) driven gear (d) driver gear
28. 28.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
29. 29.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
30. 30.⚙️ 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
31. 31.⚙️ An 8-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
32. 32.⚙️ 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
33. 33.⚙️ 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
34. 34.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) pins (d) tyres
35. 35.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
36. 36.⚙️ 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
37. 37.⚙️ 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
38. 38.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
39. 39.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
40. 40.⚙️ A 30-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower

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