Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 75 · 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 racing toy”? (a) big drives small (b) small drives big
2. 2.⚙️ 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
3. 3.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
4. 4.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
5. 5.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
6. 6.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
7. 7.⚙️ 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
8. 8.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
9. 9.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
10. 10.⚙️ A 10-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
11. 11.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
12. 12.⚙️ 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
13. 13.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
14. 14.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
15. 15.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) driven gear (c) tyre (d) idler gear
16. 16.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
17. 17.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
18. 18.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ 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
20. 20.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
21. 21.⚙️ A 16-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
22. 22.⚙️ A 40-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
23. 23.⚙️ An 8-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
24. 24.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) they do not turn (c) the same direction (d) in opposite directions
25. 25.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
26. 26.⚙️ 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
27. 27.⚙️ 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
28. 28.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
29. 29.⚙️ 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
30. 30.⚙️ A 24-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
31. 31.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) pins (c) tyres (d) teeth
32. 32.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
33. 33.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
34. 34.⚙️ 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
35. 35.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
36. 36.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
37. 37.⚙️ 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
38. 38.⚙️ A 36-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
39. 39.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) one up, one down (c) in opposite directions (d) they do not turn

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