Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 410 · 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.⚙️ 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
2. 2.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
3. 3.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster and weaker
4. 4.⚙️ 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
5. 5.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
6. 6.⚙️ 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
7. 7.⚙️ 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
8. 8.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
9. 9.⚙️ 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
10. 10.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
11. 11.⚙️ A 40-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
12. 12.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) tyres (d) pins
13. 13.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
14. 14.⚙️ 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
15. 15.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
16. 16.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
17. 17.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
18. 18.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
19. 19.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
20. 20.⚙️ 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
21. 21.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driven gear (c) driver gear (d) idler gear
22. 22.⚙️ A 30-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
23. 23.⚙️ 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
24. 24.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
25. 25.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
26. 26.⚙️ 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
27. 27.⚙️ A 15-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
28. 28.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
29. 29.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
30. 30.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
31. 31.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
32. 32.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
33. 33.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
34. 34.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) the same direction (c) in opposite directions (d) one up, one down
35. 35.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
36. 36.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
37. 37.⚙️ 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
38. 38.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
39. 39.⚙️ A 15-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
40. 40.⚙️ A 36-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed

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