Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 113 · 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 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
2. 2.⚙️ 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
3. 3.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) driven gear (c) tyre (d) idler gear
4. 4.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
5. 5.⚙️ A 16-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
6. 6.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
7. 7.⚙️ A small gear drives a big gear. The big gear turns … (a) slower but stronger (b) faster and weaker (c) at the same speed (d) not at all
8. 8.True or false: “the output is weaker” happens when a small gear drives a big one. (a) True (b) False
9. 9.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
10. 10.⚙️ What are the bumps round the edge of a gear called? (a) teeth (b) spokes (c) pins (d) tyres
11. 11.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
12. 12.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
13. 13.⚙️ 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
14. 14.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
15. 15.⚙️ A 36-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
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 small driver gear (b) a big driver gear
17. 17.⚙️ A big gear drives a small gear. The small gear turns … (a) faster but weaker (b) slower but stronger (c) at the same speed (d) not at all
18. 18.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
19. 19.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
20. 20.⚙️ 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
21. 21.⚙️ A 12-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
22. 22.⚙️ An 8-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
23. 23.⚙️ 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
24. 24.⚙️ 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
25. 25.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
26. 26.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) clockwise (b) anticlockwise
27. 27.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
28. 28.⚙️ 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
29. 29.True or false: “good for a fast fan” happens when a big gear drives a small one. (a) True (b) False
30. 30.⚙️ An 8-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
31. 31.⚙️ 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
32. 32.⚙️ 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
33. 33.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
34. 34.⚙️ A 36-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
35. 35.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
36. 36.True or false: “the output turns faster” happens when a big gear drives a small one. (a) True (b) False
37. 37.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
38. 38.⚙️ 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
39. 39.⚙️ 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
40. 40.⚙️ 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

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