Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 598 · 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.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
2. 2.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) idler gear (c) tyre (d) driver gear
3. 3.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
4. 4.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
5. 5.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
6. 6.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) slower but stronger (c) not at all (d) faster but weaker
7. 7.⚙️ A 12-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) slower (c) faster
8. 8.⚙️ 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
9. 9.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) pins (c) spokes (d) tyres
10. 10.⚙️ 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
11. 11.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
12. 12.⚙️ 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
13. 13.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
14. 14.⚙️ 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
15. 15.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
16. 16.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
17. 17.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
18. 18.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
19. 19.⚙️ A 10-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
20. 20.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
22. 22.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster and weaker
23. 23.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
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.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
26. 26.⚙️ A 36-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
27. 27.⚙️ A 40-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
28. 28.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) they do not turn (c) one up, one down (d) the same direction
29. 29.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
30. 30.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
31. 31.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
32. 32.⚙️ A 12-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
33. 33.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
34. 34.⚙️ 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
35. 35.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
36. 36.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
37. 37.⚙️ A 30-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
38. 38.⚙️ 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
39. 39.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
40. 40.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True

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