Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 332 · 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 big gear drives a small gear. The small gear turns … (a) slower but stronger (b) not at all (c) faster but weaker (d) at the same speed
2. 2.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
3. 3.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
4. 4.⚙️ A 10-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
5. 5.⚙️ Pulley A turns clockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) anticlockwise (b) clockwise
6. 6.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
7. 7.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) slower but stronger (c) faster and weaker (d) not at all
8. 8.⚙️ 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
9. 9.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
10. 10.⚙️ 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
11. 11.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
12. 12.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
13. 13.⚙️ An 8-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
14. 14.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
15. 15.⚙️ 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
16. 16.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
17. 17.⚙️ 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
18. 18.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
19. 19.⚙️ An 8-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
20. 20.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ 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
22. 22.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) tyres (d) pins
23. 23.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
24. 24.⚙️ 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
25. 25.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
26. 26.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
27. 27.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
28. 28.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
29. 29.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
30. 30.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
31. 31.⚙️ A 20-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
32. 32.⚙️ A 40-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
33. 33.⚙️ A 15-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
34. 34.⚙️ A 30-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
35. 35.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
36. 36.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
37. 37.⚙️ A 16-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
38. 38.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
39. 39.⚙️ 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
40. 40.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True

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