Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 658 · 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.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
3. 3.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
4. 4.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
5. 5.⚙️ 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
6. 6.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
7. 7.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) in opposite directions (c) one up, one down (d) they do not turn
8. 8.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
9. 9.⚙️ 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
10. 10.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
11. 11.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
12. 12.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
13. 13.⚙️ 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
14. 14.⚙️ 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
15. 15.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
16. 16.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
17. 17.⚙️ 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
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.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
20. 20.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) idler gear (c) driver gear (d) tyre
21. 21.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
22. 22.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
23. 23.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) faster and weaker (c) at the same speed (d) slower but stronger
24. 24.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
25. 25.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
26. 26.⚙️ A 24-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
27. 27.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
28. 28.⚙️ A 10-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
29. 29.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
30. 30.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) tyres (c) teeth (d) pins
31. 31.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
32. 32.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
33. 33.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
34. 34.⚙️ An 8-tooth driver gear turns an 8-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 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
36. 36.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
37. 37.⚙️ A 36-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
38. 38.⚙️ 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
39. 39.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
40. 40.⚙️ A 36-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

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