Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 889 · 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 40-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
2. 2.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
3. 3.⚙️ 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
4. 4.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
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.⚙️ 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
7. 7.⚙️ 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
8. 8.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) slower but stronger (c) not at all (d) faster and weaker
9. 9.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
10. 10.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) the same direction (c) they do not turn (d) one up, one down
11. 11.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
12. 12.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) teeth (c) pins (d) tyres
13. 13.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
14. 14.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
15. 15.⚙️ A 36-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
16. 16.⚙️ A 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
17. 17.⚙️ 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
18. 18.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
19. 19.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
20. 20.⚙️ An 8-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
21. 21.⚙️ 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
22. 22.⚙️ 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
23. 23.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
24. 24.⚙️ 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
25. 25.⚙️ 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
26. 26.⚙️ 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
27. 27.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) tyre (c) driver gear (d) driven gear
28. 28.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
29. 29.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
30. 30.⚙️ 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
31. 31.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
32. 32.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
34. 34.⚙️ A 24-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
35. 35.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
36. 36.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
37. 37.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
38. 38.⚙️ 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
39. 39.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
40. 40.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False

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