Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 364 · 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.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
2. 2.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
3. 3.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
4. 4.⚙️ A 15-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
5. 5.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
6. 6.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
7. 7.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
8. 8.⚙️ A 40-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
9. 9.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
10. 10.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) in opposite directions (c) the same direction (d) they do not turn
11. 11.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
12. 12.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
13. 13.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
14. 14.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
15. 15.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
16. 16.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) not at all (c) at the same speed (d) slower but stronger
17. 17.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
18. 18.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
19. 19.⚙️ 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
20. 20.⚙️ 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
21. 21.⚙️ 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
22. 22.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
23. 23.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
24. 24.⚙️ A 36-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) faster (c) slower
25. 25.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
26. 26.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) driver gear (c) tyre (d) idler gear
27. 27.⚙️ A 36-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
28. 28.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) tyres (d) pins
29. 29.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
30. 30.⚙️ 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
31. 31.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) not at all (c) at the same speed (d) faster but weaker
32. 32.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
33. 33.⚙️ 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
34. 34.⚙️ A 10-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
35. 35.⚙️ 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
36. 36.⚙️ A 10-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) faster (c) slower
37. 37.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
38. 38.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
39. 39.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
40. 40.⚙️ 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

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