Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 993 · 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.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
2. 2.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) pins (c) spokes (d) teeth
3. 3.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster and weaker
4. 4.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
5. 5.⚙️ 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
6. 6.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
7. 7.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) driver gear (c) idler gear (d) tyre
8. 8.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
9. 9.⚙️ A 12-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
10. 10.⚙️ 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
11. 11.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
12. 12.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
13. 13.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
14. 14.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
15. 15.⚙️ An 8-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
16. 16.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
17. 17.⚙️ 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
18. 18.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) one up, one down (c) they do not turn (d) in opposite directions
19. 19.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
20. 20.⚙️ 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
21. 21.⚙️ 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
22. 22.⚙️ 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
23. 23.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
24. 24.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
25. 25.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
26. 26.⚙️ 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
27. 27.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
28. 28.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
29. 29.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
30. 30.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
31. 31.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
32. 32.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
33. 33.⚙️ 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
34. 34.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
35. 35.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
36. 36.⚙️ A 36-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
37. 37.⚙️ A 40-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
38. 38.⚙️ A 40-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
39. 39.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
40. 40.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False

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