Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 504 · 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.⚙️ 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
2. 2.⚙️ 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
3. 3.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) faster but weaker (c) at the same speed (d) slower but stronger
4. 4.True or false: “the output is stronger” happens when a small gear drives a big 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.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
7. 7.⚙️ 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
8. 8.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
9. 9.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
10. 10.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
11. 11.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) driven gear (c) idler gear (d) tyre
12. 12.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
13. 13.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) not at all (c) at the same speed (d) faster and weaker
14. 14.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
15. 15.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
16. 16.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
17. 17.⚙️ 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
18. 18.⚙️ 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
19. 19.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
20. 20.⚙️ 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
21. 21.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
22. 22.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
23. 23.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
24. 24.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) the same direction (c) in opposite directions (d) one up, one down
25. 25.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
26. 26.⚙️ A 15-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
27. 27.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
28. 28.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
29. 29.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
30. 30.⚙️ A 16-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
31. 31.⚙️ Pulley A turns clockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) anticlockwise (b) clockwise
32. 32.⚙️ A 24-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
33. 33.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
34. 34.⚙️ A 40-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
35. 35.⚙️ 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
36. 36.⚙️ A 40-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
37. 37.⚙️ An 8-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
38. 38.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ A 30-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
40. 40.⚙️ 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

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