Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 988 · 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.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
2. 2.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
3. 3.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) not at all (c) slower but stronger (d) faster and weaker
4. 4.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
5. 5.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
6. 6.⚙️ 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
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 turns faster”? (a) big drives small (b) small drives big
9. 9.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
10. 10.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
11. 11.⚙️ 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
12. 12.⚙️ 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
13. 13.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
14. 14.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
15. 15.⚙️ 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
16. 16.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
17. 17.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
18. 18.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) driver gear (d) idler gear
19. 19.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
20. 20.⚙️ A 30-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
21. 21.⚙️ 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
22. 22.⚙️ 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
23. 23.⚙️ 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
24. 24.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
25. 25.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) in opposite directions (c) they do not turn (d) one up, one down
26. 26.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
27. 27.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
28. 28.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) spokes (c) teeth (d) pins
29. 29.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) slower but stronger (c) not at all (d) at the same speed
30. 30.⚙️ A 40-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
31. 31.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
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.⚙️ A 20-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
34. 34.⚙️ A 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
35. 35.⚙️ 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
36. 36.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
37. 37.⚙️ 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
38. 38.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
39. 39.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
40. 40.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big

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