Robotics Worksheet: Gears – Speed or Strength

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

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