Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 323 · 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) the same direction (b) they do not turn (c) one up, one down (d) in opposite directions
2. 2.⚙️ A 12-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
3. 3.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
4. 4.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
5. 5.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) at the same speed (c) faster but weaker (d) slower but stronger
6. 6.⚙️ 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
7. 7.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) pins (c) teeth (d) tyres
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 big driver gear (b) a small driver gear
9. 9.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
10. 10.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) slower but stronger (c) faster and weaker (d) at the same speed
11. 11.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
12. 12.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
13. 13.⚙️ 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
14. 14.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
15. 15.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
16. 16.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
17. 17.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
18. 18.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ A 40-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
20. 20.⚙️ A 40-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
21. 21.⚙️ 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
22. 22.⚙️ A 20-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
23. 23.⚙️ A 16-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
24. 24.⚙️ A 10-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
25. 25.⚙️ 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
26. 26.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
27. 27.⚙️ 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
28. 28.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
29. 29.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
30. 30.⚙️ 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
31. 31.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
32. 32.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
33. 33.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driven gear (c) driver gear (d) tyre
34. 34.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
35. 35.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
36. 36.⚙️ A 24-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
37. 37.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
38. 38.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ 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
40. 40.⚙️ 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

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