Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 839 · 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.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
2. 2.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) spokes (c) tyres (d) teeth
3. 3.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
4. 4.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
5. 5.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
6. 6.⚙️ 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
7. 7.⚙️ A 12-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
8. 8.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
9. 9.⚙️ An 8-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
10. 10.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
11. 11.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
12. 12.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
13. 13.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
14. 14.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
15. 15.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) at the same speed (c) faster and weaker (d) not at all
16. 16.⚙️ 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
17. 17.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
18. 18.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
19. 19.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) tyre (c) driven gear (d) idler gear
20. 20.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
21. 21.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
22. 22.⚙️ A 10-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
23. 23.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
24. 24.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) they do not turn (c) in opposite directions (d) the same direction
25. 25.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
26. 26.⚙️ A 10-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
27. 27.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
28. 28.⚙️ 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
29. 29.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
30. 30.⚙️ 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
31. 31.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
32. 32.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
34. 34.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
35. 35.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster but weaker
36. 36.⚙️ 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
37. 37.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
38. 38.⚙️ 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
39. 39.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
40. 40.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True

Free robotics lessons, practice and worksheets at talentjr.in/robotics-for-kids