Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 819 · 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.⚙️ 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
2. 2.⚙️ A 36-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
3. 3.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
4. 4.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
5. 5.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
6. 6.⚙️ A 40-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
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.⚙️ 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
9. 9.⚙️ 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
10. 10.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
11. 11.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
12. 12.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
13. 13.⚙️ 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
14. 14.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) tyres (c) pins (d) spokes
15. 15.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
16. 16.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) tyre (c) driven gear (d) driver gear
17. 17.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
18. 18.⚙️ 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
19. 19.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) slower but stronger (c) faster and weaker (d) at the same speed
20. 20.⚙️ 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
21. 21.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
22. 22.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
23. 23.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
24. 24.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
25. 25.⚙️ An 8-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
26. 26.⚙️ A 36-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
27. 27.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
28. 28.⚙️ 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
29. 29.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
30. 30.⚙️ A 15-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
31. 31.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
32. 32.⚙️ A 20-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
33. 33.⚙️ 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
34. 34.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
35. 35.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
36. 36.⚙️ A 15-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
37. 37.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
38. 38.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
40. 40.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise

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