Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 60 · 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) at the same speed (c) faster but weaker (d) not at all
2. 2.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
3. 3.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
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.⚙️ A 10-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
6. 6.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
7. 7.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
8. 8.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
9. 9.⚙️ A 36-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) faster (c) slower
10. 10.⚙️ 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) faster (c) slower
11. 11.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
12. 12.⚙️ An 8-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
13. 13.⚙️ 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
14. 14.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
15. 15.⚙️ 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
16. 16.⚙️ 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
17. 17.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
18. 18.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
19. 19.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
20. 20.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
21. 21.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
22. 22.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
23. 23.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
24. 24.⚙️ A 20-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
25. 25.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
26. 26.⚙️ A 15-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
27. 27.⚙️ 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
28. 28.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
29. 29.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driver gear (d) driven gear
30. 30.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
31. 31.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
32. 32.⚙️ A 12-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
33. 33.⚙️ A 36-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
34. 34.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
35. 35.⚙️ 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
36. 36.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
37. 37.⚙️ 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
38. 38.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) one up, one down (c) in opposite directions (d) the same direction
39. 39.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
40. 40.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True

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