Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 797 · 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 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
2. 2.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
3. 3.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) spokes (c) pins (d) teeth
4. 4.⚙️ 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
5. 5.⚙️ A 20-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
6. 6.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
7. 7.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) one up, one down (c) the same direction (d) in opposite directions
8. 8.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
9. 9.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
10. 10.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
11. 11.⚙️ 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 small driver gear (b) a big driver gear
12. 12.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) slower but stronger (c) faster and weaker (d) not at all
13. 13.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
14. 14.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
15. 15.⚙️ 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
16. 16.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
17. 17.⚙️ A 40-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
18. 18.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
19. 19.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driven gear (c) idler gear (d) driver gear
20. 20.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
21. 21.⚙️ A 16-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
22. 22.⚙️ 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
23. 23.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
24. 24.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
25. 25.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
26. 26.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
27. 27.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
28. 28.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
29. 29.⚙️ A 30-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
30. 30.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
31. 31.⚙️ 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
32. 32.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
33. 33.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
34. 34.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) faster but weaker (c) slower but stronger (d) not at all
35. 35.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
36. 36.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
37. 37.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
38. 38.⚙️ 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
39. 39.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
40. 40.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small

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