Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 595 · 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.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
3. 3.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
4. 4.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
5. 5.⚙️ 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
6. 6.⚙️ Which gear set-up gives this: “the output is weaker”? (a) big drives small (b) small drives big
7. 7.⚙️ 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
8. 8.⚙️ Pulley A turns anticlockwise and drives pulley B with a crossed belt (it makes an X). Which way does pulley B turn? (a) anticlockwise (b) clockwise
9. 9.⚙️ 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
10. 10.⚙️ A 10-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
11. 11.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
12. 12.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
13. 13.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False
14. 14.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
15. 15.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) idler gear (c) tyre (d) driven gear
16. 16.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) teeth (c) tyres (d) spokes
17. 17.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
18. 18.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
19. 19.⚙️ 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
20. 20.⚙️ Two gears are meshed together. How do they turn? (a) in opposite directions (b) the same direction (c) one up, one down (d) they do not turn
21. 21.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
22. 22.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
23. 23.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
24. 24.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) not at all (c) faster but weaker (d) at the same speed
25. 25.⚙️ A 24-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
26. 26.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
27. 27.⚙️ 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
28. 28.⚙️ 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
29. 29.⚙️ 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
30. 30.⚙️ 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
31. 31.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
32. 32.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
33. 33.⚙️ A 36-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
34. 34.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
35. 35.⚙️ A 20-tooth driver gear turns a 20-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
36. 36.⚙️ A 16-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
37. 37.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
38. 38.⚙️ 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
39. 39.⚙️ 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
40. 40.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False

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