Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 378 · 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.⚙️ 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
2. 2.⚙️ 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
3. 3.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
4. 4.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
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.⚙️ 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
7. 7.⚙️ A 40-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
8. 8.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) not at all (c) at the same speed (d) slower but stronger
9. 9.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
10. 10.⚙️ A 16-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
11. 11.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
12. 12.⚙️ An 8-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
13. 13.⚙️ 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
14. 14.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
15. 15.⚙️ A 10-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
16. 16.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
17. 17.⚙️ 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
18. 18.⚙️ 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
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 small driver gear (b) a big driver gear
20. 20.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) teeth (c) spokes (d) pins
21. 21.⚙️ A 36-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
22. 22.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
23. 23.⚙️ A 15-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
24. 24.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
25. 25.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) not at all (c) at the same speed (d) faster but weaker
26. 26.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
27. 27.⚙️ 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
28. 28.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) driver gear (c) tyre (d) idler gear
29. 29.⚙️ 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
30. 30.⚙️ 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
31. 31.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
32. 32.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
33. 33.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
34. 34.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
35. 35.⚙️ An 8-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
36. 36.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
37. 37.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) faster and weaker (d) slower but stronger
38. 38.⚙️ 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
39. 39.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
40. 40.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True

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