Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 845 · 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.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) coins as the load (d) yeast
2. 2.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
3. 3.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 40 cm (d) 5 cm
4. 4.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a balloon (d) coins as the load
6. 6.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) about half (d) the same
7. 7.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
8. 8.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) coins as the load (d) a mirror
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the lifting height (c) the same cup of coins (d) number of pulleys
11. 11.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
12. 12.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
13. 13.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a crowbar (c) a steering wheel (d) a crane
14. 14.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) a pencil (d) a battery cell
16. 16.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
17. 17.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
18. 18.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
19. 19.True or false: a slide is an inclined plane. (a) True (b) False
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins
22. 22.True or false: a flagpole is an inclined plane. (a) True (b) False
23. 23.True or false: a doorknob is a lever. (a) True (b) False
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
26. 26.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
27. 27.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) turmeric powder (d) a pencil
29. 29.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) water gets lighter (d) pulling down is easier
30. 30.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) magnet (d) nail
31. 31.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a slide (c) a flagpole (d) a crane
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
33. 33.True or false: a well pulley is a wheel and axle. (a) True (b) False
34. 34.True or false: a crowbar is a wheel and axle. (a) False (b) True
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) a small paper cup (d) a pencil
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) True (b) False
37. 37.⚙️ Which of these is a lever? (a) a crane (b) a sloping road (c) a spoon lifting a lid (d) a doorknob
38. 38.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a bottle opener (c) a ramp (d) a crane

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