Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 789 · 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.⚙️ 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
2. 2.⚙️ 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
3. 3.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
4. 4.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) they do not turn (c) one up, one down (d) in opposite directions
5. 5.⚙️ A 16-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
6. 6.⚙️ 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
7. 7.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
8. 8.⚙️ A 16-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
9. 9.⚙️ 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
10. 10.⚙️ 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
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.⚙️ 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
13. 13.⚙️ 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
14. 14.⚙️ 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
15. 15.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) True (b) False
16. 16.⚙️ 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
17. 17.⚙️ A 24-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
18. 18.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
19. 19.⚙️ 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
20. 20.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) at the same speed (c) slower but stronger (d) not at all
21. 21.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
22. 22.⚙️ An 8-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
23. 23.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) driven gear (d) tyre
24. 24.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) at the same speed (c) faster and weaker (d) not at all
25. 25.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
26. 26.⚙️ A 24-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
27. 27.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
28. 28.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) tyres (c) teeth (d) pins
29. 29.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
30. 30.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
31. 31.True or false: “good for a slow crane” happens when a big gear drives a small 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.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
35. 35.⚙️ 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
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.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
38. 38.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
40. 40.True or false: “good for a racing toy” 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