Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 965 · 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 a racing toy”? (a) small drives big (b) big drives small
2. 2.⚙️ 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
3. 3.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) teeth (c) tyres (d) spokes
4. 4.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
5. 5.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
6. 6.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
7. 7.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
8. 8.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) in opposite directions (c) one up, one down (d) they do not turn
9. 9.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
10. 10.⚙️ 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
11. 11.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
12. 12.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
13. 13.⚙️ 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
14. 14.⚙️ 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
15. 15.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
16. 16.⚙️ A 24-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
17. 17.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
18. 18.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) idler gear (d) driver gear
19. 19.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
20. 20.⚙️ A 16-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
21. 21.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) not at all (c) at the same speed (d) slower but stronger
22. 22.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
23. 23.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
24. 24.⚙️ 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
25. 25.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
26. 26.⚙️ 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
27. 27.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) faster but weaker (c) slower but stronger (d) at the same speed
28. 28.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
29. 29.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
30. 30.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
31. 31.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
32. 32.⚙️ A 16-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
33. 33.⚙️ 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
34. 34.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
35. 35.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
36. 36.⚙️ A 15-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
37. 37.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
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.⚙️ An 8-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
40. 40.⚙️ 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

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