Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 607 · 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 40-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
2. 2.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
3. 3.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
4. 4.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
5. 5.⚙️ 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
6. 6.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
7. 7.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) pins (c) spokes (d) teeth
8. 8.⚙️ A 24-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
9. 9.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
10. 10.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) driven gear (c) tyre (d) idler gear
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 small driver gear (b) a big driver gear
12. 12.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) they do not turn (d) in opposite directions
13. 13.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
14. 14.⚙️ A 16-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
15. 15.⚙️ 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
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) clockwise (b) anticlockwise
17. 17.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) slower but stronger (c) faster but weaker (d) at the same speed
18. 18.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
19. 19.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
20. 20.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
21. 21.⚙️ A 20-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) faster (c) slower
22. 22.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
23. 23.⚙️ A 10-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
24. 24.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
25. 25.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
26. 26.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) faster and weaker (c) not at all (d) slower but stronger
27. 27.⚙️ A 15-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
28. 28.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
29. 29.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
30. 30.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
31. 31.⚙️ 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
32. 32.⚙️ 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
33. 33.⚙️ 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
34. 34.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
35. 35.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
36. 36.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
37. 37.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
38. 38.⚙️ A 16-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
39. 39.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ A 20-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

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