Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 423 · 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 small driver gear (b) a big driver gear
2. 2.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) slower but stronger (c) at the same speed (d) not at all
3. 3.⚙️ 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
4. 4.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
5. 5.⚙️ A 20-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
6. 6.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) not at all (c) faster and weaker (d) slower but stronger
7. 7.⚙️ 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) slower (c) faster
8. 8.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) the same direction (c) in opposite directions (d) one up, one down
9. 9.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
10. 10.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
11. 11.⚙️ 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
12. 12.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
13. 13.⚙️ 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
14. 14.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
15. 15.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
16. 16.⚙️ 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
17. 17.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
18. 18.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
19. 19.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
20. 20.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ 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
22. 22.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
23. 23.⚙️ A 24-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) slower (c) faster
24. 24.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
25. 25.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
26. 26.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
27. 27.⚙️ 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
28. 28.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
29. 29.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
30. 30.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
31. 31.⚙️ A 16-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
32. 32.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ A 10-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
34. 34.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
35. 35.⚙️ A 40-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
36. 36.⚙️ 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
37. 37.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driven gear (d) driver gear
38. 38.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
39. 39.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) tyres (d) pins

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