Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 818 · 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 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
2. 2.⚙️ A 10-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
3. 3.⚙️ A 15-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
4. 4.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
5. 5.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) tyres (d) pins
6. 6.⚙️ 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
7. 7.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
8. 8.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
9. 9.True or false: “the output turns slower” 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) small drives big (b) big drives small
11. 11.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) faster but weaker (c) slower but stronger (d) not at all
12. 12.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
13. 13.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
14. 14.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
15. 15.⚙️ A 24-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
16. 16.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
17. 17.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) they do not turn (c) in opposite directions (d) the same direction
18. 18.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
19. 19.⚙️ A 40-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
20. 20.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
21. 21.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
22. 22.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
23. 23.⚙️ 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
24. 24.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
25. 25.⚙️ 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
26. 26.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driven gear (d) driver gear
27. 27.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
28. 28.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
29. 29.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
30. 30.⚙️ A 16-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
31. 31.⚙️ 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
32. 32.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
33. 33.⚙️ 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
34. 34.⚙️ A 30-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
35. 35.⚙️ A 20-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
36. 36.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
37. 37.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
38. 38.⚙️ A 20-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
39. 39.⚙️ A 24-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
40. 40.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False

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