Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 954 · 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.True or false: a crane uses a pulley. (a) True (b) False
2. 2.⚙️ Which of these is a lever? (a) a slide (b) a doorknob (c) a spoon lifting a lid (d) a steering wheel
3. 3.⚖️ 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) the same cup of coins (c) number of pulleys
4. 4.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a well pulley (c) a crane (d) a ramp
5. 5.⚖️ 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
6. 6.True or false: a spoon lifting a lid is a lever. (a) True (b) False
7. 7.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
8. 8.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 10 cm (d) 20 cm
9. 9.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) the same (d) double
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) turmeric powder (c) an empty thread reel (d) coins as the load
11. 11.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
12. 12.⚖️ 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
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) up (d) down
15. 15.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a spoon lifting a lid (c) a crane (d) a slide
17. 17.⚖️ 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
18. 18.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) the rope gets shorter (d) pulling down is easier
19. 19.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
20. 20.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
21. 21.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
22. 22.True or false: a tap handle is a lever. (a) True (b) False
23. 23.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
25. 25.True or false: a sloping road is an inclined plane. (a) True (b) False
26. 26.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it is magnetic (d) it might sing
27. 27.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
28. 28.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) changes pull direction (d) halves the weight
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) turmeric powder
30. 30.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) yeast (c) an empty thread reel (d) a pencil
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) a magnet (d) an empty thread reel
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a pencil (d) coins as the load
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a balloon (d) coins as the load
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) coins as the load (d) a mirror
36. 36.⚖️ 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
37. 37.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a flagpole (c) a slide (d) a spoon lifting a lid
38. 38.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
39. 39.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
40. 40.⚖️ 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 same cup of coins (c) the same string (d) number of pulleys

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