Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 720 · 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.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
3. 3.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
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.⚙️ 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
6. 6.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
7. 7.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) not at all (c) slower but stronger (d) faster but weaker
8. 8.⚙️ 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
9. 9.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
10. 10.⚙️ A 10-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
11. 11.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
12. 12.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
13. 13.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
14. 14.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) they do not turn (c) in opposite directions (d) the same direction
15. 15.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
16. 16.⚙️ 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
17. 17.⚙️ A 15-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
18. 18.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
19. 19.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
20. 20.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
21. 21.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
22. 22.⚙️ 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
23. 23.⚙️ A 30-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
24. 24.⚙️ A 24-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
25. 25.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
26. 26.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
27. 27.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
28. 28.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
29. 29.⚙️ 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
30. 30.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
31. 31.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
32. 32.⚙️ A 40-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
33. 33.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
34. 34.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
35. 35.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) driver gear (d) idler gear
36. 36.⚙️ A 30-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
37. 37.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
38. 38.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
39. 39.⚙️ 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
40. 40.⚙️ 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

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