Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 652 · 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 small gear drives a big gear. The big gear turns … (a) at the same speed (b) faster and weaker (c) slower but stronger (d) not at all
2. 2.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
3. 3.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) they do not turn (d) in opposite directions
4. 4.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
5. 5.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
6. 6.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) tyres (d) pins
7. 7.⚙️ An 8-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
8. 8.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
9. 9.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
10. 10.⚙️ 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
11. 11.⚙️ A 20-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
12. 12.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
13. 13.⚙️ A 24-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
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: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
16. 16.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
17. 17.⚙️ 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) slower (c) faster
18. 18.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driven gear (d) driver gear
19. 19.⚙️ 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
20. 20.⚙️ 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
21. 21.⚙️ 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
22. 22.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
23. 23.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
24. 24.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
25. 25.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
26. 26.⚙️ 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
27. 27.⚙️ 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
28. 28.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
29. 29.⚙️ 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
30. 30.⚙️ An 8-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
31. 31.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
32. 32.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
33. 33.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
34. 34.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
35. 35.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
36. 36.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
37. 37.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
38. 38.⚙️ A 10-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
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) clockwise (b) anticlockwise
40. 40.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big

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