Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 150 · 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) slower but stronger (c) not at all (d) at the same speed
2. 2.⚙️ 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
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.⚙️ 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
5. 5.⚙️ A 40-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
6. 6.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
7. 7.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
8. 8.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) pins (c) teeth (d) spokes
9. 9.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
10. 10.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) slower but stronger (c) not at all (d) faster but weaker
11. 11.⚙️ A 40-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
12. 12.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
13. 13.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
14. 14.⚙️ An 8-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
15. 15.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
16. 16.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
17. 17.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) they do not turn (c) one up, one down (d) the same direction
18. 18.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
19. 19.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
20. 20.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
21. 21.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
22. 22.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
23. 23.⚙️ 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
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) anticlockwise (b) clockwise
25. 25.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
26. 26.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
27. 27.⚙️ A 16-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) slower (c) faster
28. 28.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
29. 29.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
30. 30.⚙️ 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
31. 31.⚙️ A 20-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
32. 32.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
33. 33.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
34. 34.⚙️ A 10-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) slower (c) faster
35. 35.⚙️ 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
36. 36.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driver gear (d) driven gear
37. 37.⚙️ A 30-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
38. 38.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
39. 39.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
40. 40.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False

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