Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 895 · 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 clockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
2. 2.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
3. 3.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
4. 4.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) at the same speed (c) not at all (d) slower but stronger
5. 5.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driven gear (c) driver gear (d) idler gear
6. 6.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) slower but stronger (c) at the same speed (d) not at all
7. 7.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
8. 8.⚙️ 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
9. 9.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
10. 10.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
11. 11.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) pins (c) teeth (d) spokes
12. 12.⚙️ 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
13. 13.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
14. 14.⚙️ 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
15. 15.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
16. 16.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
17. 17.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
18. 18.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) they do not turn (d) in opposite directions
20. 20.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
21. 21.⚙️ An 8-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
22. 22.⚙️ 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
23. 23.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
24. 24.⚙️ A 24-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
25. 25.⚙️ A 30-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
26. 26.⚙️ 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
27. 27.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
28. 28.⚙️ 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
29. 29.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
30. 30.⚙️ 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
31. 31.⚙️ A 10-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
32. 32.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ A 12-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
34. 34.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) faster and weaker (c) at the same speed (d) not at all
35. 35.⚙️ 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
36. 36.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
37. 37.⚙️ An 8-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
38. 38.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
39. 39.⚙️ 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
40. 40.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small

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