Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 615 · 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 is stronger” happens when a small gear drives a big one. (a) False (b) True
2. 2.⚙️ 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) faster (c) slower
3. 3.⚙️ A 15-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
4. 4.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) not at all (c) slower but stronger (d) faster and weaker
5. 5.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) one up, one down (c) they do not turn (d) the same direction
6. 6.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
7. 7.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
8. 8.⚙️ A 10-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
9. 9.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
10. 10.⚙️ 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
11. 11.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
12. 12.⚙️ A 30-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.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
14. 14.⚙️ A 12-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
15. 15.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
16. 16.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
17. 17.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) faster but weaker (c) at the same speed (d) slower but stronger
18. 18.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
19. 19.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
20. 20.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
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.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
24. 24.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
25. 25.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
26. 26.⚙️ A 10-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
27. 27.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) teeth (c) tyres (d) spokes
28. 28.⚙️ A 12-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
29. 29.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
30. 30.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
31. 31.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
32. 32.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
33. 33.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
34. 34.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
35. 35.⚙️ 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
36. 36.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
37. 37.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
38. 38.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
39. 39.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
40. 40.⚙️ A 12-tooth driver gear turns a 20-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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