Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 212 · 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: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
2. 2.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
3. 3.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
4. 4.⚙️ 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
5. 5.⚙️ 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
6. 6.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
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) clockwise (b) anticlockwise
8. 8.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
9. 9.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) not at all (c) faster but weaker (d) slower but stronger
10. 10.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
11. 11.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
12. 12.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
13. 13.⚙️ 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
14. 14.⚙️ 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
15. 15.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
16. 16.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
17. 17.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
18. 18.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
19. 19.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) the same direction (c) one up, one down (d) in opposite directions
20. 20.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
21. 21.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
22. 22.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) pins (c) teeth (d) spokes
23. 23.⚙️ A 15-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
24. 24.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) faster and weaker (c) not at all (d) slower but stronger
25. 25.⚙️ A 30-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
26. 26.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
27. 27.⚙️ 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
28. 28.⚙️ A 15-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
29. 29.⚙️ A 24-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
30. 30.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
31. 31.⚙️ An 8-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
32. 32.⚙️ A 24-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) faster (c) slower
33. 33.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
34. 34.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
35. 35.⚙️ 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
36. 36.⚙️ 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
37. 37.⚙️ A 12-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
38. 38.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
40. 40.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise

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