Robotics Worksheet: Gears – Speed or Strength

Robotics lesson 13: Gears: speed or strength · Set 577 · 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.True or false: “the output turns slower” happens when a small gear drives a big one. (a) True (b) False
2. 2.True or false: “good for lifting loads” happens when a small gear drives a big one. (a) True (b) False
3. 3.⚙️ 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
4. 4.⚙️ Pulley A turns clockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) anticlockwise (b) clockwise
5. 5.⚙️ The gear fixed to the motor is called the … (a) driven gear (b) idler gear (c) tyre (d) driver gear
6. 6.⚙️ What are the bumps round the edge of a gear called? (a) pins (b) tyres (c) teeth (d) spokes
7. 7.⚙️ 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
8. 8.True or false: “the output is weaker” happens when a small gear drives a big one. (a) False (b) True
9. 9.⚙️ 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
10. 10.⚙️ A big gear drives a small gear. The small gear turns … (a) at the same speed (b) not at all (c) slower but stronger (d) faster but weaker
11. 11.⚙️ 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
12. 12.⚙️ A 24-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) faster (c) slower
13. 13.⚙️ 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
14. 14.⚙️ An 8-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) slower (c) faster
15. 15.True or false: “the output is weaker” happens when a big gear drives a small one. (a) True (b) False
16. 16.⚙️ A 10-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
17. 17.True or false: “the output turns faster” happens when a small gear drives a big one. (a) False (b) True
18. 18.⚙️ A 40-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) at the same speed (b) slower (c) faster
19. 19.True or false: “good for lifting loads” happens when a big gear drives a small one. (a) False (b) True
20. 20.⚙️ A 40-tooth driver gear turns an 8-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) slower (b) faster (c) at the same speed
21. 21.⚙️ Which gear set-up gives this: “the output turns faster”? (a) small drives big (b) big drives small
22. 22.⚙️ A 15-tooth driver gear turns a 24-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
23. 23.True or false: “good for a racing toy” happens when a small gear drives a big one. (a) True (b) False
24. 24.⚙️ 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
25. 25.True or false: “good for a slow crane” happens when a small gear drives a big one. (a) False (b) True
26. 26.⚙️ Pulley A turns anticlockwise and drives pulley B with an open belt (no cross). Which way does pulley B turn? (a) clockwise (b) anticlockwise
27. 27.⚙️ 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
28. 28.⚙️ Which gear set-up gives this: “the output is weaker”? (a) small drives big (b) big drives small
29. 29.⚙️ Which gear set-up gives this: “the output turns slower”? (a) big drives small (b) small drives big
30. 30.⚙️ A small gear drives a big gear. The big gear turns … (a) at the same speed (b) faster and weaker (c) not at all (d) slower but stronger
31. 31.⚙️ Which gear set-up gives this: “good for a slow crane”? (a) small drives big (b) big drives small
32. 32.⚙️ Which gear set-up gives this: “good for lifting loads”? (a) big drives small (b) small drives big
33. 33.True or false: “the output is stronger” happens when a big gear drives a small one. (a) True (b) False
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.⚙️ 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
36. 36.⚙️ 4 gears are in a row, each meshed with the next. Gear 1 turns anticlockwise. Which way does gear 4 turn? (a) clockwise (b) anticlockwise
37. 37.⚙️ A 36-tooth driver gear turns a 16-tooth driven gear. Compared with the driver, how does the driven gear turn? (a) faster (b) slower (c) at the same speed
38. 38.⚙️ Which gear set-up gives this: “good for a racing toy”? (a) small drives big (b) big drives small
39. 39.⚙️ Which gear set-up gives this: “the output is stronger”? (a) big drives small (b) small drives big
40. 40.True or false: “good for a fast fan” happens when a small gear drives a big one. (a) True (b) False

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