Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 599 · 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 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
2. 2.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
3. 3.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
4. 4.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
5. 5.⚙️ 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
6. 6.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
7. 7.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
8. 8.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
9. 9.⚙️ A 20-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
10. 10.⚙️ A 10-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
11. 11.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) tyre (c) driven gear (d) idler gear
12. 12.⚙️ 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
13. 13.⚙️ 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
14. 14.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) they do not turn (c) in opposite directions (d) one up, one down
15. 15.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
16. 16.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
17. 17.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
18. 18.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
19. 19.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) not at all (c) faster but weaker (d) at the same speed
20. 20.⚙️ 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
21. 21.⚙️ 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
22. 22.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
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.⚙️ A 20-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
25. 25.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
26. 26.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
27. 27.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
28. 28.⚙️ A 10-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
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: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
31. 31.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
32. 32.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
33. 33.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) tyre (d) driven gear
34. 34.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
35. 35.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
36. 36.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) spokes (c) pins (d) teeth
37. 37.⚙️ 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
38. 38.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
39. 39.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise

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