Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 739 · 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 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
2. 2.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
3. 3.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
4. 4.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
5. 5.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
6. 6.⚙️ 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
7. 7.⚙️ A 24-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
8. 8.⚙️ 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
9. 9.⚙️ 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
10. 10.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 3 turn? (a) clockwise (b) anticlockwise
11. 11.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
12. 12.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
13. 13.⚙️ A 16-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
14. 14.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) tyres (c) pins (d) teeth
15. 15.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
16. 16.⚙️ 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
17. 17.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
18. 18.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) not at all (c) slower but stronger (d) faster and weaker
19. 19.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) in opposite directions (c) they do not turn (d) one up, one down
20. 20.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
21. 21.⚙️ A 15-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
22. 22.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
23. 23.⚙️ 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
24. 24.⚙️ A 36-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
25. 25.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) driver gear (c) idler gear (d) tyre
26. 26.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
27. 27.⚙️ A 12-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
28. 28.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
29. 29.⚙️ An 8-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) slower (c) faster
30. 30.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
31. 31.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
32. 32.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
33. 33.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
34. 34.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
35. 35.⚙️ An 8-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
36. 36.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
37. 37.⚙️ 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
38. 38.⚙️ 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
39. 39.⚙️ 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
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