Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 365 · 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: “the output is weaker”? (a) small drives big (b) big drives small
2. 2.⚙️ 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
3. 3.⚙️ 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
4. 4.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) driver gear (d) idler gear
5. 5.⚙️ A 36-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
6. 6.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
7. 7.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
8. 8.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
9. 9.⚙️ 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
10. 10.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) slower but stronger (c) not at all (d) at the same speed
11. 11.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
12. 12.⚙️ 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
13. 13.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
14. 14.⚙️ 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
15. 15.⚙️ 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
16. 16.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
17. 17.⚙️ 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
18. 18.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
19. 19.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
20. 20.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
22. 22.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
23. 23.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
24. 24.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
25. 25.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
26. 26.⚙️ 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
27. 27.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) at the same speed (c) not at all (d) faster and weaker
28. 28.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
29. 29.⚙️ 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
30. 30.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
31. 31.⚙️ 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
32. 32.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
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.⚙️ A 36-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
35. 35.⚙️ 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
36. 36.⚙️ 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
37. 37.⚙️ A 10-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
38. 38.⚙️ 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
39. 39.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) pins (c) tyres (d) teeth
40. 40.⚙️ A 30-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed

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