Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 216 · 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.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
2. 2.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
3. 3.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
4. 4.⚙️ A 36-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
5. 5.⚙️ A 36-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
6. 6.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
7. 7.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
8. 8.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driver gear (d) driven gear
9. 9.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
10. 10.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
11. 11.⚙️ 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
12. 12.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
13. 13.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). 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) True (b) False
15. 15.⚙️ A 40-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) slower (c) faster
16. 16.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
17. 17.⚙️ 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
18. 18.⚙️ 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
19. 19.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
20. 20.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ A 30-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
22. 22.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
23. 23.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) not at all (c) faster but weaker (d) slower but stronger
24. 24.⚙️ 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
25. 25.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
26. 26.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) tyres (c) pins (d) spokes
27. 27.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
28. 28.⚙️ 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
29. 29.⚙️ 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
30. 30.⚙️ 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
31. 31.⚙️ A 40-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
32. 32.⚙️ 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
33. 33.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
34. 34.⚙️ An 8-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (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.⚙️ 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
37. 37.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
38. 38.⚙️ A 16-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
39. 39.⚙️ A 30-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
40. 40.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big

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