Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 131 · 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 30-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
2. 2.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) faster but weaker (c) not at all (d) slower but stronger
3. 3.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
4. 4.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
5. 5.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
6. 6.⚙️ 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
7. 7.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) they do not turn (c) one up, one down (d) in opposite directions
8. 8.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
9. 9.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
10. 10.⚙️ 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
11. 11.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) tyres (c) pins (d) teeth
12. 12.⚙️ 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
13. 13.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
14. 14.⚙️ 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
15. 15.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driven gear (d) driver gear
16. 16.⚙️ 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
17. 17.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
18. 18.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
19. 19.⚙️ 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
20. 20.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
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 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
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) big drives small (b) small drives big
25. 25.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
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.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
28. 28.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
29. 29.⚙️ 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
30. 30.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
31. 31.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
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.⚙️ 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.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
35. 35.⚙️ An 8-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
36. 36.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
37. 37.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
38. 38.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ A 40-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
40. 40.⚙️ A 15-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) faster (c) slower

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