Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 944 · 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 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
2. 2.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
3. 3.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
4. 4.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
5. 5.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
6. 6.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
7. 7.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
8. 8.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
9. 9.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
10. 10.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
11. 11.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) not at all (c) faster but weaker (d) slower but stronger
12. 12.⚙️ 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
13. 13.⚙️ 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
14. 14.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
15. 15.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
16. 16.⚙️ 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
17. 17.⚙️ 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
18. 18.⚙️ 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
19. 19.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
20. 20.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) pins (d) tyres
21. 21.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
22. 22.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
23. 23.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
24. 24.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
25. 25.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
26. 26.⚙️ 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
27. 27.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driver gear (c) idler gear (d) driven gear
28. 28.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
29. 29.⚙️ A 40-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
30. 30.⚙️ 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
31. 31.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
32. 32.⚙️ 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
33. 33.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
34. 34.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
35. 35.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
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.⚙️ 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
38. 38.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
39. 39.⚙️ 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
40. 40.⚙️ A 12-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

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