Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 71 · 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.⚙️ 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
2. 2.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
3. 3.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
4. 4.⚙️ 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
5. 5.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
6. 6.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
7. 7.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) faster but weaker (c) at the same speed (d) not at all
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.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
10. 10.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
11. 11.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
12. 12.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
13. 13.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
14. 14.⚙️ A 20-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
15. 15.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) tyres (c) spokes (d) teeth
16. 16.⚙️ 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
17. 17.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
18. 18.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
19. 19.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) driver gear (c) tyre (d) idler gear
20. 20.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
21. 21.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) not at all (c) slower but stronger (d) at the same speed
22. 22.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
23. 23.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
24. 24.⚙️ 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
25. 25.⚙️ A 12-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
26. 26.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
27. 27.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
28. 28.⚙️ An 8-tooth driver gear turns a 12-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: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
30. 30.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
31. 31.⚙️ A 16-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (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) clockwise (b) anticlockwise
33. 33.⚙️ An 8-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
34. 34.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
35. 35.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
36. 36.⚙️ 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
37. 37.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
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.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
40. 40.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big

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