Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 64 · 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 small gear drives a big gear. The big gear turns … (a) at the same speed (b) not at all (c) faster and weaker (d) slower but stronger
2. 2.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
3. 3.⚙️ A 36-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
4. 4.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
5. 5.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
6. 6.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) tyres (c) spokes (d) pins
7. 7.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
8. 8.⚙️ A 24-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
9. 9.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
10. 10.⚙️ 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
11. 11.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) True (b) False
12. 12.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
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.⚙️ A 16-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
15. 15.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
16. 16.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
17. 17.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
18. 18.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
19. 19.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
20. 20.⚙️ A 10-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
21. 21.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
22. 22.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
23. 23.⚙️ 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
24. 24.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
25. 25.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) tyre (c) driver gear (d) idler gear
26. 26.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) slower but stronger (c) faster but weaker (d) not at all
27. 27.⚙️ A 20-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
28. 28.⚙️ 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
29. 29.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
30. 30.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
31. 31.⚙️ 6 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 6 turn? (a) clockwise (b) anticlockwise
32. 32.⚙️ An 8-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
33. 33.⚙️ 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
34. 34.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
35. 35.⚙️ 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
36. 36.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
37. 37.⚙️ A 20-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
38. 38.⚙️ A 12-tooth driver gear turns a 10-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
39. 39.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
40. 40.True or false: “the output is weaker” 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