Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 621 · 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.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
2. 2.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
3. 3.⚙️ 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
4. 4.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
5. 5.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
6. 6.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
7. 7.⚙️ A 10-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
8. 8.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) one up, one down (c) in opposite directions (d) the same direction
9. 9.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
10. 10.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
11. 11.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
12. 12.⚙️ A 16-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
13. 13.⚙️ 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
14. 14.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
15. 15.⚙️ A 10-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
16. 16.⚙️ A 24-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
17. 17.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) spokes (c) tyres (d) teeth
18. 18.⚙️ 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
19. 19.⚙️ 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
20. 20.⚙️ An 8-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
21. 21.⚙️ 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
22. 22.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
23. 23.⚙️ 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
24. 24.⚙️ 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
25. 25.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
26. 26.⚙️ 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
27. 27.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
28. 28.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
29. 29.⚙️ 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
30. 30.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
31. 31.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) slower but stronger (c) at the same speed (d) faster and weaker
32. 32.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
33. 33.⚙️ 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
34. 34.⚙️ Pulley A turns anticlockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) clockwise (b) anticlockwise
35. 35.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
36. 36.⚙️ A 30-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
37. 37.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driver gear (d) driven gear
38. 38.⚙️ A 36-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
39. 39.⚙️ 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
40. 40.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False

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