Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 517 · 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: “good for lifting loads”? (a) big drives small (b) small drives big
2. 2.⚙️ A 24-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
3. 3.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
4. 4.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
5. 5.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
6. 6.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) in opposite directions (c) they do not turn (d) the same direction
7. 7.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
8. 8.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
9. 9.⚙️ An 8-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
10. 10.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
11. 11.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
12. 12.⚙️ A 20-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
13. 13.⚙️ 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
14. 14.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
15. 15.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
16. 16.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
17. 17.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) faster and weaker (c) slower but stronger (d) not at all
18. 18.⚙️ 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
19. 19.⚙️ 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
20. 20.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) driven gear (c) tyre (d) idler gear
21. 21.⚙️ A 36-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
22. 22.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
23. 23.⚙️ 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
24. 24.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
25. 25.⚙️ 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
26. 26.⚙️ An 8-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
27. 27.⚙️ What are the bumps round the edge of a gear called? (a) tyres (b) teeth (c) pins (d) spokes
28. 28.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
29. 29.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
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) clockwise (b) anticlockwise
31. 31.⚙️ An 8-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
32. 32.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
34. 34.⚙️ A 16-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
35. 35.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
36. 36.⚙️ 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
37. 37.⚙️ A 40-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
38. 38.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
39. 39.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
40. 40.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise

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