Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 461 · 40 questions

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

1. 1.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins (d) the lifting height
2. 2.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) False (b) True
4. 4.⚙️ Which of these is a lever? (a) a ramp (b) a well pulley (c) a flagpole (d) a bottle opener
5. 5.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
6. 6.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
7. 7.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
8. 8.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) rope (d) battery
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) an empty thread reel (d) a mirror
10. 10.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a ramp (c) a crane (d) a steering wheel
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) string (c) coins as the load (d) a pencil
12. 12.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) makes it magnetic (c) halves the weight (d) changes pull direction
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) False (b) True
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) impossible (d) harder
16. 16.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
17. 17.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) a pencil (d) an empty thread reel
19. 19.⚙️ Which of these uses a pulley? (a) a see-saw (b) a tap handle (c) a flagpole (d) a sloping road
20. 20.⚙️ Which of these is a lever? (a) a ramp (b) a flagpole (c) a crowbar (d) a well pulley
21. 21.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
23. 23.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 10 cm (d) 40 cm
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a balloon (d) coins as the load
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) a pencil (d) a magnet
27. 27.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.True or false: a bottle opener uses a pulley. (a) True (b) False
30. 30.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
31. 31.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) yeast (d) a magnet
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) a pencil (d) string
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) string (d) a balloon
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a small paper cup (d) a battery cell
36. 36.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
37. 37.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a flagpole (c) a bottle opener (d) a sloping road
38. 38.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
39. 39.⚙️ Which simple machine is a crane? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
40. 40.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever

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