Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 823 · 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.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
2. 2.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) water gets lighter (d) pulling down is easier
3. 3.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
4. 4.⚙️ Which of these is an inclined plane? (a) a ramp (b) a crane (c) a doorknob (d) a see-saw
5. 5.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) battery (d) magnet
6. 6.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
9. 9.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
10. 10.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it gets wet (d) it turns blue
11. 11.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
12. 12.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
13. 13.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) string (d) turmeric powder
16. 16.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a slide (c) a flagpole (d) a spoon lifting a lid
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) False (b) True
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) False (b) True
19. 19.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same string (b) the lifting height (c) number of pulleys (d) how hard we must pull
21. 21.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
22. 22.⚙️ Which of these is a lever? (a) a slide (b) a steering wheel (c) a sloping road (d) a see-saw
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a small paper cup (d) a pencil
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a ramp (c) a flagpole (d) a steering wheel
27. 27.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) how hard we must pull (c) number of pulleys
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a magnet (c) an empty thread reel (d) coins as the load
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) turmeric powder (d) a small paper cup
31. 31.True or false: a crane uses a pulley. (a) False (b) True
32. 32.⚖️ 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
33. 33.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
34. 34.⚖️ 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
35. 35.True or false: a bottle opener uses a pulley. (a) True (b) False
36. 36.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
37. 37.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) double (d) about half
38. 38.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
39. 39.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
40. 40.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a see-saw (c) a ramp (d) a slide

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