Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 245 · 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 clockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
2. 2.⚙️ The gear fixed to the motor is called the … (a) idler gear (b) driver gear (c) tyre (d) driven gear
3. 3.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
4. 4.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
5. 5.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
6. 6.⚙️ 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
7. 7.⚙️ 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
8. 8.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) teeth (c) spokes (d) tyres
9. 9.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
10. 10.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
11. 11.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) faster but weaker (c) slower but stronger (d) not at all
12. 12.⚙️ 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
13. 13.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
14. 14.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
15. 15.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
16. 16.⚙️ 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
17. 17.⚙️ 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
18. 18.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
19. 19.⚙️ 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
20. 20.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
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 turns faster”? (a) small drives big (b) big drives small
23. 23.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) one up, one down (c) in opposite directions (d) they do not turn
24. 24.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
25. 25.⚙️ 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 small driver gear (b) a big driver gear
26. 26.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
27. 27.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
28. 28.⚙️ A 10-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
29. 29.⚙️ 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
30. 30.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
31. 31.⚙️ 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
32. 32.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
33. 33.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
34. 34.⚙️ A 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
35. 35.⚙️ 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
36. 36.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
37. 37.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
38. 38.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) anticlockwise (b) clockwise
40. 40.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big

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