Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 367 · 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.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) at the same speed (c) not at all (d) faster but weaker
3. 3.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
4. 4.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
5. 5.⚙️ 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
6. 6.⚙️ 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
7. 7.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
8. 8.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
9. 9.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driven gear (c) idler gear (d) driver gear
10. 10.⚙️ 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
11. 11.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
12. 12.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
13. 13.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
14. 14.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) faster and weaker (c) not at all (d) slower but stronger
15. 15.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
16. 16.⚙️ 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
17. 17.⚙️ A 16-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
18. 18.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
19. 19.⚙️ An 8-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
20. 20.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
21. 21.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
22. 22.⚙️ 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
23. 23.⚙️ A 40-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
24. 24.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
25. 25.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) tyres (c) spokes (d) teeth
26. 26.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) the same direction (c) they do not turn (d) one up, one down
27. 27.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
28. 28.⚙️ 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
29. 29.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
30. 30.⚙️ A 15-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
31. 31.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
32. 32.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
34. 34.⚙️ A 15-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) faster (c) slower
35. 35.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
36. 36.⚙️ A 10-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) slower (c) faster
37. 37.⚙️ A 20-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) faster (c) slower
38. 38.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
39. 39.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ An 8-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

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