Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 660 · 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.⚙️ 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
2. 2.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
3. 3.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
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.⚙️ 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
6. 6.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) faster and weaker (c) slower but stronger (d) at the same speed
7. 7.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
8. 8.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) tyre (c) driven gear (d) driver gear
9. 9.⚙️ A 15-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
10. 10.⚙️ 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
11. 11.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
12. 12.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
13. 13.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
14. 14.⚙️ 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
15. 15.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
16. 16.⚙️ 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
17. 17.⚙️ 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
18. 18.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
19. 19.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
20. 20.⚙️ 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
21. 21.⚙️ 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
22. 22.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
23. 23.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 6 turn? (a) anticlockwise (b) clockwise
24. 24.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
25. 25.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) one up, one down (c) the same direction (d) in opposite directions
26. 26.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
27. 27.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
28. 28.⚙️ 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
29. 29.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
30. 30.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
31. 31.⚙️ 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
32. 32.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) slower but stronger (c) at the same speed (d) not at all
33. 33.⚙️ 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
34. 34.⚙️ 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
35. 35.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
36. 36.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
37. 37.⚙️ A 40-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
38. 38.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
39. 39.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
40. 40.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big

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