Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 138 · 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 big gear drives a small one. (a) True (b) False
2. 2.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
3. 3.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
4. 4.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
5. 5.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
6. 6.⚙️ 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
7. 7.⚙️ 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
8. 8.⚙️ 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
9. 9.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
10. 10.⚙️ 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
11. 11.⚙️ A 12-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
12. 12.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) driven gear (d) tyre
13. 13.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) one up, one down (c) the same direction (d) they do not turn
14. 14.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
15. 15.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
16. 16.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
17. 17.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
18. 18.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
19. 19.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
20. 20.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) tyres (d) pins
21. 21.⚙️ A 10-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
22. 22.⚙️ 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
23. 23.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
24. 24.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
25. 25.⚙️ 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
26. 26.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
27. 27.⚙️ A 16-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
28. 28.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
29. 29.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) faster but weaker (c) slower but stronger (d) not at all
30. 30.⚙️ A 16-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
31. 31.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
32. 32.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
33. 33.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
34. 34.⚙️ A 16-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
35. 35.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
36. 36.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
37. 37.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
38. 38.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
39. 39.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
40. 40.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False

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