Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 958 · 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 20-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
2. 2.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
3. 3.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) tyres (c) teeth (d) spokes
4. 4.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
5. 5.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
6. 6.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
7. 7.⚙️ 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
8. 8.⚙️ 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
9. 9.⚙️ A 24-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
10. 10.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
11. 11.⚙️ 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
12. 12.⚙️ 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
13. 13.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
14. 14.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
15. 15.⚙️ 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
16. 16.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
17. 17.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
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 big gear drives a small gear. The small gear turns … (a) faster but weaker (b) not at all (c) at the same speed (d) slower but stronger
20. 20.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) they do not turn (c) one up, one down (d) the same direction
21. 21.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
22. 22.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
23. 23.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) not at all (c) faster and weaker (d) slower but stronger
24. 24.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
25. 25.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
26. 26.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
27. 27.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
28. 28.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
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 small gear drives a big one. (a) False (b) True
31. 31.⚙️ 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
32. 32.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
33. 33.⚙️ 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
34. 34.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
35. 35.⚙️ A 10-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
36. 36.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
37. 37.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
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.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driven gear (c) driver gear (d) tyre
40. 40.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False

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