Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 299 · 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 20-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
2. 2.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
3. 3.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
4. 4.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
5. 5.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) not at all (c) slower but stronger (d) faster but weaker
6. 6.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
7. 7.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) idler gear (d) driver gear
8. 8.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) tyres (c) teeth (d) pins
9. 9.⚙️ A 40-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
10. 10.⚙️ 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
11. 11.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
12. 12.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
13. 13.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
14. 14.⚙️ A 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
15. 15.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
16. 16.⚙️ 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
17. 17.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
18. 18.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
20. 20.⚙️ 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
21. 21.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
22. 22.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
23. 23.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
24. 24.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
25. 25.⚙️ 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
26. 26.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
27. 27.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
28. 28.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
29. 29.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) faster and weaker (c) at the same speed (d) slower but stronger
30. 30.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
31. 31.⚙️ A 40-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
32. 32.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
33. 33.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
34. 34.⚙️ 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
35. 35.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
36. 36.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
37. 37.⚙️ A 24-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
38. 38.⚙️ An 8-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) slower (c) faster
39. 39.⚙️ A 30-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) faster (c) slower
40. 40.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise

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