Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 966 · 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.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: “good for a fast fan”? (a) small drives big (b) big drives small
4. 4.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) they do not turn (c) in opposite directions (d) one up, one down
5. 5.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
6. 6.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
7. 7.⚙️ A small gear drives a big gear. The big gear turns … (a) faster and weaker (b) at the same speed (c) slower but stronger (d) not at all
8. 8.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
9. 9.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
10. 10.⚙️ 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) slower (c) faster
11. 11.⚙️ 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
12. 12.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 4 turn? (a) anticlockwise (b) clockwise
13. 13.⚙️ 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
14. 14.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
15. 15.⚙️ 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
16. 16.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
17. 17.⚙️ 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
18. 18.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
19. 19.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
20. 20.⚙️ 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
21. 21.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
22. 22.⚙️ 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
23. 23.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) spokes (c) tyres (d) teeth
24. 24.⚙️ An 8-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
25. 25.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
26. 26.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) False (b) True
27. 27.⚙️ 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
28. 28.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
29. 29.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
30. 30.True or false: “the output is weaker” happens when a big gear drives a small one. (a) False (b) True
31. 31.⚙️ A 10-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
32. 32.⚙️ A 12-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
33. 33.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
34. 34.⚙️ A big gear drives a small gear. The small gear turns … (a) not at all (b) faster but weaker (c) slower but stronger (d) at the same speed
35. 35.⚙️ A 16-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
36. 36.⚙️ A 15-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) faster (c) slower
37. 37.⚙️ The gear fixed to the motor is called the … (a) tyre (b) idler gear (c) driven gear (d) driver gear
38. 38.True or false: “the output turns slower” happens when a big gear drives a small one. (a) False (b) True
39. 39.⚙️ A 20-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
40. 40.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False

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