Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 416 · 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.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
3. 3.⚙️ 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
4. 4.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
5. 5.⚙️ 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
6. 6.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
7. 7.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
8. 8.⚙️ A 24-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) slower (c) faster
9. 9.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
10. 10.⚙️ 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
11. 11.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) at the same speed (c) slower but stronger (d) not at all
12. 12.⚙️ 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
13. 13.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
14. 14.⚙️ 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
15. 15.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
16. 16.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) the same direction (c) one up, one down (d) they do not turn
17. 17.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
18. 18.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
19. 19.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
20. 20.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
22. 22.⚙️ 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
23. 23.⚙️ A 40-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
24. 24.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
25. 25.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
26. 26.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) tyres (c) spokes (d) pins
27. 27.⚙️ An 8-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) slower (c) faster
28. 28.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
29. 29.⚙️ 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
30. 30.⚙️ A 15-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) slower (c) faster
31. 31.⚙️ A 30-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
32. 32.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
33. 33.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
34. 34.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driven gear (c) idler gear (d) driver gear
35. 35.⚙️ A 36-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
36. 36.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
37. 37.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
38. 38.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
39. 39.⚙️ A 24-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
40. 40.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True

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