Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 551 · 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: “the output turns slower”? (a) small drives big (b) big drives small
2. 2.⚙️ 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
3. 3.⚙️ 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
4. 4.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) not at all (c) slower but stronger (d) at the same speed
5. 5.⚙️ 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
6. 6.True or false: “good for lifting loads” happens when a small gear drives a big 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 big driver gear (b) a small driver gear
8. 8.⚙️ A 10-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
9. 9.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) tyre (d) driven gear
10. 10.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) slower but stronger (c) at the same speed (d) not at all
11. 11.⚙️ 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
12. 12.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
13. 13.⚙️ A 20-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
14. 14.⚙️ 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
15. 15.⚙️ A 16-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
16. 16.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
17. 17.⚙️ 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
18. 18.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
20. 20.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
21. 21.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) pins (d) tyres
22. 22.⚙️ 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
23. 23.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
24. 24.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
25. 25.⚙️ 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
26. 26.⚙️ 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
27. 27.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
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) True (b) False
30. 30.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
31. 31.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
32. 32.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
33. 33.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
34. 34.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) slower but stronger (c) faster and weaker (d) not at all
35. 35.⚙️ A 12-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
36. 36.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) one up, one down (c) the same direction (d) they do not turn
37. 37.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
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 turns faster” happens when a big gear drives a small one. (a) True (b) False
40. 40.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False

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