Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 606 · 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.⚙️ 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
2. 2.⚙️ A 36-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
3. 3.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
4. 4.⚙️ 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
5. 5.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
6. 6.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) one up, one down (c) the same direction (d) in opposite directions
7. 7.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
8. 8.⚙️ 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
9. 9.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster and weaker
10. 10.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
11. 11.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
12. 12.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
13. 13.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
14. 14.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
15. 15.⚙️ A 12-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
16. 16.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driver gear (d) driven gear
17. 17.⚙️ 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
18. 18.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
19. 19.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) pins (c) teeth (d) spokes
20. 20.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
21. 21.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
22. 22.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
23. 23.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
24. 24.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
25. 25.⚙️ A 40-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
26. 26.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
27. 27.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
28. 28.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
29. 29.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
30. 30.⚙️ 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
31. 31.⚙️ A 30-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
32. 32.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
33. 33.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
34. 34.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) faster but weaker (c) not at all (d) slower but stronger
35. 35.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
36. 36.⚙️ 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
37. 37.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
38. 38.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
39. 39.⚙️ 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
40. 40.⚙️ A 36-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

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