Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 290 · 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 16-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
2. 2.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
3. 3.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
4. 4.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
5. 5.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) in opposite directions (c) one up, one down (d) they do not turn
6. 6.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
7. 7.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
8. 8.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driver gear (c) idler gear (d) driven gear
9. 9.⚙️ A 30-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
10. 10.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
11. 11.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
12. 12.⚙️ 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
13. 13.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
14. 14.⚙️ 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
15. 15.⚙️ A 24-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
16. 16.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
17. 17.⚙️ 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
18. 18.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
19. 19.⚙️ A 10-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
20. 20.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
21. 21.⚙️ 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
22. 22.⚙️ 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
23. 23.⚙️ 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
24. 24.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) slower but stronger (c) at the same speed (d) faster but weaker
25. 25.⚙️ 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
26. 26.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
27. 27.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
28. 28.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) pins (d) tyres
29. 29.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
30. 30.⚙️ A 20-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
31. 31.⚙️ 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
32. 32.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
33. 33.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
34. 34.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
35. 35.⚙️ 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
36. 36.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
37. 37.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
38. 38.⚙️ 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
39. 39.⚙️ A 24-tooth driver gear turns a 40-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 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster

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