Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 722 · 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.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
3. 3.⚙️ 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
4. 4.⚙️ 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
5. 5.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) tyres (c) pins (d) spokes
6. 6.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
7. 7.⚙️ 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
8. 8.⚙️ A 16-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
9. 9.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
10. 10.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
11. 11.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) they do not turn (c) the same direction (d) in opposite directions
12. 12.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
13. 13.⚙️ 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
14. 14.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
15. 15.⚙️ A 10-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
16. 16.⚙️ 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
17. 17.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
18. 18.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
19. 19.⚙️ A 40-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) slower (c) faster
20. 20.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
21. 21.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
22. 22.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
23. 23.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
24. 24.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
25. 25.⚙️ 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
26. 26.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
27. 27.⚙️ A 30-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
28. 28.⚙️ 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
29. 29.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
30. 30.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
31. 31.⚙️ 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
32. 32.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
33. 33.⚙️ A 16-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
34. 34.⚙️ 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
35. 35.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
36. 36.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) driven gear (c) tyre (d) idler gear
37. 37.⚙️ A 12-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
38. 38.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
39. 39.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
40. 40.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise

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