Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 546 · 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.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) teeth (c) pins (d) spokes
2. 2.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
3. 3.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
4. 4.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
5. 5.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) driver gear (d) idler gear
6. 6.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
7. 7.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
8. 8.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) at the same speed (c) faster and weaker (d) not at all
9. 9.⚙️ 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
10. 10.⚙️ A 20-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
11. 11.⚙️ 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
12. 12.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
13. 13.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
14. 14.⚙️ 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
15. 15.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) not at all (c) at the same speed (d) faster but weaker
16. 16.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
17. 17.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) one up, one down (c) in opposite directions (d) the same direction
18. 18.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
20. 20.⚙️ 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
21. 21.⚙️ A 36-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
22. 22.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
23. 23.⚙️ 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
24. 24.⚙️ 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
25. 25.⚙️ 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
26. 26.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
27. 27.True or false: “the output turns faster” happens when a small gear drives a big 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.⚙️ 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
30. 30.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
31. 31.⚙️ 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
32. 32.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
33. 33.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
34. 34.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
35. 35.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
36. 36.True or false: “the output is stronger” 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) True (b) False
38. 38.⚙️ An 8-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
39. 39.⚙️ 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
40. 40.⚙️ 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

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