Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 805 · 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.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
2. 2.⚙️ An 8-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
3. 3.⚙️ Two gears are meshed together. How do they turn? (a) they do not turn (b) in opposite directions (c) the same direction (d) one up, one down
4. 4.True or false: “the output is stronger” happens when a small gear drives a big one. (a) False (b) True
5. 5.⚙️ 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
6. 6.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
7. 7.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
8. 8.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
9. 9.⚙️ 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
10. 10.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
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.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) big drives small (b) small drives big
13. 13.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
14. 14.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
15. 15.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
16. 16.⚙️ 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
17. 17.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) idler gear (c) tyre (d) driven gear
18. 18.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
19. 19.⚙️ 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
20. 20.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
21. 21.True or false: “the output is stronger” happens when a big gear drives a small one. (a) False (b) True
22. 22.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) False (b) True
23. 23.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
24. 24.⚙️ A 20-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
25. 25.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
26. 26.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
27. 27.True or false: “the output turns faster” happens when a small gear drives a big one. (a) True (b) False
28. 28.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
29. 29.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) slower but stronger (c) not at all (d) at the same speed
30. 30.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
31. 31.⚙️ A 40-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
32. 32.⚙️ What are the bumps round the edge of a gear called? (a) spokes (b) tyres (c) pins (d) teeth
33. 33.⚙️ 7 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 7 turn? (a) clockwise (b) anticlockwise
34. 34.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
35. 35.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) False (b) True
36. 36.⚙️ 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
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.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) not at all (c) faster and weaker (d) at the same speed
39. 39.⚙️ 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
40. 40.⚙️ 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

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