Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 616 · 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.⚙️ 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
2. 2.⚙️ A 16-tooth driver gear turns a 30-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
3. 3.⚙️ Which gear set-up gives this: “the output turns slower”? (a) small drives big (b) big drives small
4. 4.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) big drives small (b) small drives big
5. 5.⚙️ Which gear set-up gives this: “the output is stronger”? (a) small drives big (b) big drives small
6. 6.⚙️ A big gear drives a small gear. The small gear turns … (a) slower but stronger (b) faster but weaker (c) not at all (d) at the same speed
7. 7.⚙️ Two gears are meshed together. How do they turn? (a) one up, one down (b) the same direction (c) in opposite directions (d) they do not turn
8. 8.⚙️ 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
9. 9.True or false: “good for a slow crane” happens when a big gear drives a small one. (a) True (b) False
10. 10.⚙️ A 36-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
11. 11.⚙️ A 30-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
12. 12.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) False (b) True
13. 13.⚙️ 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
14. 14.⚙️ 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
15. 15.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
16. 16.⚙️ 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
17. 17.⚙️ 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
18. 18.⚙️ 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
19. 19.⚙️ 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
20. 20.⚙️ 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
21. 21.⚙️ A 12-tooth driver gear turns a 12-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower
22. 22.⚙️ Which gear set-up gives this: “good for a fast fan”? (a) small drives big (b) big drives small
23. 23.True or false: “the output turns faster” happens when a big gear drives a small one. (a) False (b) True
24. 24.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
25. 25.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) slower but stronger (c) not at all (d) faster and weaker
26. 26.⚙️ The gear fixed to the motor is called the … (a) driver gear (b) tyre (c) driven gear (d) idler gear
27. 27.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) True (b) False
28. 28.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
29. 29.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
30. 30.True or false: “the output turns slower” happens when a small gear drives a big one. (a) False (b) True
31. 31.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
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.⚙️ A 40-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
34. 34.⚙️ 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
35. 35.⚙️ 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
36. 36.⚙️ 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
37. 37.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
38. 38.⚙️ 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
39. 39.⚙️ 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
40. 40.⚙️ A 30-tooth driver gear turns a 40-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) at the same speed (c) slower

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