Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 888 · 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 big gear drives a small gear. The small gear turns … (a) slower but stronger (b) faster but weaker (c) not at all (d) at the same speed
2. 2.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) they do not turn (c) in opposite directions (d) the same direction
3. 3.True or false: “good for a slow crane” 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) clockwise (b) anticlockwise
5. 5.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
6. 6.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
7. 7.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) faster and weaker (c) at the same speed (d) not at all
8. 8.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
9. 9.⚙️ 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
10. 10.⚙️ 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
11. 11.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) spokes (c) pins (d) teeth
12. 12.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
13. 13.⚙️ 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
14. 14.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
15. 15.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
16. 16.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
17. 17.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
18. 18.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
19. 19.⚙️ 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
20. 20.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
21. 21.⚙️ 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
22. 22.⚙️ 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
23. 23.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
24. 24.⚙️ A 30-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
25. 25.⚙️ 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
26. 26.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driven gear (c) idler gear (d) driver gear
27. 27.⚙️ 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
28. 28.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
29. 29.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
30. 30.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
31. 31.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
32. 32.⚙️ 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
33. 33.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
34. 34.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
35. 35.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
36. 36.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
37. 37.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
38. 38.⚙️ 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
39. 39.⚙️ A 10-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
40. 40.⚙️ A 10-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed

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