Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 348 · 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.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) spokes (c) tyres (d) teeth
2. 2.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
3. 3.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
4. 4.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) idler gear (c) tyre (d) driver gear
5. 5.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
6. 6.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
7. 7.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
8. 8.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
9. 9.⚙️ 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
10. 10.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
11. 11.⚙️ 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
12. 12.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
13. 13.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
14. 14.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
15. 15.⚙️ 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
16. 16.⚙️ A 12-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) faster (c) slower
17. 17.⚙️ 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
18. 18.⚙️ 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
19. 19.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
20. 20.⚙️ 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
21. 21.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) slower but stronger (c) at the same speed (d) faster but weaker
22. 22.⚙️ 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
23. 23.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
24. 24.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
25. 25.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) slower but stronger (c) at the same speed (d) not at all
26. 26.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) they do not turn (d) in opposite directions
27. 27.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
28. 28.⚙️ A 36-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
29. 29.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
30. 30.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
31. 31.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
32. 32.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
33. 33.⚙️ A 20-tooth driver gear turns a 20-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 24-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
35. 35.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
36. 36.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
37. 37.⚙️ 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
38. 38.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
40. 40.⚙️ A 24-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster

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