Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 58 · 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 racing toy”? (a) big drives small (b) small drives big
2. 2.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
3. 3.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
4. 4.⚙️ 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
5. 5.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
6. 6.⚙️ 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
7. 7.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
8. 8.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
9. 9.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
10. 10.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
11. 11.⚙️ 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
12. 12.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) idler gear (c) driven gear (d) tyre
13. 13.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
14. 14.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
15. 15.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
16. 16.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) pins (c) spokes (d) teeth
17. 17.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
18. 18.⚙️ 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) slower (c) faster
19. 19.⚙️ A 40-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
20. 20.⚙️ A 36-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
21. 21.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
22. 22.⚙️ 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
23. 23.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
24. 24.⚙️ 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
25. 25.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
26. 26.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
27. 27.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) faster but weaker (c) at the same speed (d) not at all
28. 28.⚙️ A 20-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
29. 29.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
30. 30.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
31. 31.⚙️ An 8-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
32. 32.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
34. 34.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) they do not turn (d) in opposite directions
35. 35.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
36. 36.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
37. 37.⚙️ An 8-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
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.⚙️ 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
40. 40.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big

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