Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 359 · 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 lifting loads”? (a) big drives small (b) small drives big
2. 2.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
3. 3.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
4. 4.⚙️ 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
5. 5.⚙️ A 20-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
6. 6.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
7. 7.⚙️ 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 small driver gear (b) a big driver gear
8. 8.⚙️ 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
9. 9.⚙️ 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
10. 10.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
11. 11.⚙️ 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
12. 12.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) driver gear (c) tyre (d) idler gear
13. 13.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
14. 14.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
15. 15.⚙️ A 30-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
16. 16.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) faster and weaker (c) slower but stronger (d) at the same speed
17. 17.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
18. 18.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) pins (c) spokes (d) tyres
19. 19.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
20. 20.⚙️ 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
21. 21.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
22. 22.⚙️ A 12-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
23. 23.⚙️ A 24-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
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 stronger”? (a) small drives big (b) big drives small
26. 26.⚙️ 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
27. 27.⚙️ A 40-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
28. 28.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
29. 29.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
30. 30.⚙️ An 8-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
31. 31.⚙️ A 10-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
32. 32.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
33. 33.⚙️ 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
34. 34.⚙️ A 30-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
35. 35.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) in opposite directions (c) they do not turn (d) the same direction
36. 36.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
37. 37.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
38. 38.⚙️ 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
39. 39.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
40. 40.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False

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