Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 438 · 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.⚙️ 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
2. 2.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
3. 3.⚙️ 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
4. 4.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
5. 5.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) one up, one down (c) they do not turn (d) in opposite directions
6. 6.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
7. 7.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
8. 8.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
9. 9.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) slower but stronger (c) not at all (d) faster and weaker
10. 10.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
11. 11.⚙️ 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
12. 12.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) at the same speed (c) slower but stronger (d) not at all
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.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) tyres (c) spokes (d) pins
15. 15.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
16. 16.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
17. 17.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
18. 18.⚙️ A 40-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
19. 19.⚙️ 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
20. 20.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
21. 21.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
22. 22.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
23. 23.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
24. 24.⚙️ A 15-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
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 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
27. 27.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
28. 28.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
29. 29.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
30. 30.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
31. 31.⚙️ 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
32. 32.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) tyre (d) driven gear
33. 33.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
34. 34.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
35. 35.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
36. 36.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
37. 37.⚙️ A 16-tooth driver gear turns a 40-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 slow crane” happens when a big gear drives a small one. (a) True (b) False
39. 39.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ An 8-tooth driver gear turns a 20-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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