Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 403 · 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 small gear drives a big gear. The big gear turns … (a) faster and weaker (b) at the same speed (c) not at all (d) slower but stronger
2. 2.⚙️ A 15-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
3. 3.⚙️ A 36-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
4. 4.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
5. 5.⚙️ A 12-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
6. 6.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
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.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
9. 9.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
10. 10.⚙️ A 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
11. 11.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
12. 12.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) at the same speed (c) faster but weaker (d) not at all
13. 13.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
14. 14.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
15. 15.⚙️ A 10-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
16. 16.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
17. 17.⚙️ 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
18. 18.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
19. 19.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) one up, one down (c) in opposite directions (d) they do not turn
20. 20.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
21. 21.⚙️ A 40-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
22. 22.⚙️ 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
23. 23.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
24. 24.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
25. 25.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
26. 26.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
27. 27.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
28. 28.⚙️ A 40-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) faster (c) slower
29. 29.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
30. 30.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
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 16-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
33. 33.⚙️ A 24-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
34. 34.⚙️ A 10-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
35. 35.⚙️ A 36-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
36. 36.⚙️ 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
37. 37.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) teeth (c) spokes (d) pins
38. 38.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) tyre (d) driven gear
39. 39.⚙️ A 16-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
40. 40.⚙️ 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

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