Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 574 · 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.⚙️ 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
3. 3.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
4. 4.⚙️ 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
5. 5.⚙️ 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
6. 6.⚙️ 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
7. 7.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) the same direction (c) one up, one down (d) they do not turn
8. 8.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
9. 9.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
10. 10.⚙️ A 12-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
11. 11.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
12. 12.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) pins (d) tyres
13. 13.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
14. 14.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
15. 15.⚙️ 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
16. 16.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
17. 17.⚙️ 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
18. 18.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ 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
20. 20.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
21. 21.⚙️ A 36-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
22. 22.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
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.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
25. 25.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
26. 26.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
27. 27.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
28. 28.⚙️ A 12-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
29. 29.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
30. 30.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
31. 31.⚙️ 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
32. 32.⚙️ A 15-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
33. 33.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
34. 34.⚙️ A 15-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
35. 35.⚙️ A 30-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
36. 36.⚙️ 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
37. 37.⚙️ 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
38. 38.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
39. 39.⚙️ A 10-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
40. 40.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driver gear (c) driven gear (d) idler gear

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