Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 813 · 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 lifting loads”? (a) small drives big (b) big drives small
2. 2.⚙️ 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
3. 3.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
4. 4.⚙️ 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
5. 5.⚙️ A 20-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
6. 6.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
7. 7.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
8. 8.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) faster and weaker (d) slower but stronger
9. 9.⚙️ 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
10. 10.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
11. 11.⚙️ 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
12. 12.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
13. 13.⚙️ 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
14. 14.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
15. 15.⚙️ 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
16. 16.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
17. 17.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
18. 18.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
19. 19.⚙️ A 36-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
20. 20.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) tyres (d) pins
21. 21.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
22. 22.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
23. 23.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driven gear (c) driver gear (d) tyre
24. 24.⚙️ A 40-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
25. 25.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
26. 26.⚙️ 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
27. 27.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
28. 28.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
29. 29.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
30. 30.⚙️ A 36-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
31. 31.⚙️ 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
32. 32.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) in opposite directions (c) they do not turn (d) the same direction
33. 33.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
34. 34.⚙️ 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
35. 35.⚙️ A 16-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
36. 36.⚙️ A 15-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
37. 37.⚙️ A 15-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
38. 38.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
39. 39.⚙️ 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
40. 40.⚙️ 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

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