Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 769 · 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.⚙️ 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
2. 2.⚙️ 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
3. 3.True or false: “the output turns slower” happens when a big gear drives a small one. (a) True (b) False
4. 4.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) small drives big (b) big drives small
5. 5.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
6. 6.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
7. 7.⚙️ A 12-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
8. 8.⚙️ Which gear set-up gives this: “the output turns faster”? (a) big drives small (b) small drives big
9. 9.True or false: “the output is stronger” happens when a small gear drives a big one. (a) True (b) False
10. 10.⚙️ 5 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 5 turn? (a) anticlockwise (b) clockwise
11. 11.⚙️ An 8-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) faster (c) slower
12. 12.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) False (b) True
13. 13.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) spokes (c) tyres (d) teeth
14. 14.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
15. 15.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
16. 16.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
17. 17.⚙️ Two gears are meshed together. How do they turn? (a) the same direction (b) in opposite directions (c) they do not turn (d) one up, one down
18. 18.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
19. 19.⚙️ 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
20. 20.⚙️ A small gear drives a big gear. The big gear turns … (a) not at all (b) at the same speed (c) slower but stronger (d) faster and weaker
21. 21.⚙️ 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
22. 22.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 2 turn? (a) clockwise (b) anticlockwise
23. 23.⚙️ The gear fixed to the motor is called the … (a) tyre (b) driver gear (c) driven gear (d) idler gear
24. 24.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) big drives small (b) small drives big
25. 25.⚙️ 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
26. 26.⚙️ 2 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 2 turn? (a) anticlockwise (b) clockwise
27. 27.⚙️ 3 gears are in a row, each meshed with the next. Gear 1 turns clockwise. Which way does gear 3 turn? (a) anticlockwise (b) clockwise
28. 28.⚙️ A 12-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
29. 29.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
30. 30.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
31. 31.⚙️ A 16-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
32. 32.⚙️ 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
33. 33.⚙️ A 36-tooth driver gear turns a 36-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) at the same speed (c) faster
34. 34.⚙️ 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
35. 35.⚙️ A 40-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
36. 36.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
37. 37.True or false: “good for a racing toy” happens when a big gear drives a small one. (a) False (b) True
38. 38.⚙️ An 8-tooth driver gear turns a 15-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
39. 39.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) at the same speed (c) not at all (d) faster but weaker
40. 40.⚙️ A 10-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

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