Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 233 · 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 turns slower” happens when a big gear drives a small one. (a) True (b) False
2. 2.⚙️ 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
3. 3.⚙️ 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
4. 4.True or false: “good for a slow crane” 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.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) faster and weaker (d) slower but stronger
7. 7.⚙️ A 15-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
8. 8.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
9. 9.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
10. 10.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
11. 11.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
12. 12.⚙️ A 12-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
13. 13.⚙️ 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
14. 14.⚙️ 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
15. 15.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
16. 16.⚙️ 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
17. 17.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
18. 18.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
19. 19.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
20. 20.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) tyres (d) pins
21. 21.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
22. 22.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
23. 23.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster but weaker
24. 24.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
25. 25.⚙️ A 12-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
26. 26.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
27. 27.⚙️ A 24-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
28. 28.⚙️ 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
29. 29.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driven gear (c) driver gear (d) idler gear
30. 30.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
31. 31.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
32. 32.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
33. 33.⚙️ A 36-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
34. 34.⚙️ 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
35. 35.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
36. 36.⚙️ A 30-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
37. 37.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
38. 38.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
39. 39.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
40. 40.⚙️ A 24-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

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