Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 191 · 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.⚙️ 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
2. 2.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) they do not turn (c) the same direction (d) one up, one down
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.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) spokes (c) teeth (d) tyres
5. 5.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
6. 6.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
7. 7.⚙️ 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
8. 8.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) faster and weaker (c) not at all (d) slower but stronger
9. 9.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
10. 10.⚙️ A 10-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
11. 11.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
12. 12.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
13. 13.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
14. 14.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
15. 15.⚙️ 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
16. 16.⚙️ A 12-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
17. 17.⚙️ 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
18. 18.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
19. 19.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
20. 20.⚙️ A 40-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
21. 21.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
22. 22.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
23. 23.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
24. 24.⚙️ 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
25. 25.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
26. 26.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
27. 27.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
28. 28.⚙️ A 10-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
29. 29.⚙️ 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
30. 30.⚙️ An 8-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) faster (c) slower
31. 31.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
32. 32.⚙️ A 36-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
33. 33.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
34. 34.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
35. 35.⚙️ A 24-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
36. 36.⚙️ 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
37. 37.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
38. 38.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
39. 39.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
40. 40.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise

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