Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 658 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) coins as the load (d) yeast
2. 2.True or false: a bottle opener is a lever. (a) True (b) False
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a balloon (d) coins as the load
5. 5.⚙️ Which of these uses a pulley? (a) a tap handle (b) a see-saw (c) a ramp (d) a flagpole
6. 6.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it turns blue (d) it gets longer
7. 7.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) a magnet (d) a mirror
9. 9.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
10. 10.True or false: string is needed for the thread-reel pulley. (a) False (b) True
11. 11.⚖️ 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) False (b) True
12. 12.🛟 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
13. 13.⚖️ 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) False (b) True
14. 14.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
15. 15.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
16. 16.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) pulling down is easier (d) the rope gets shorter
19. 19.🧺 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
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the lifting height (c) how hard we must pull (d) number of pulleys
21. 21.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
22. 22.⚖️ 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) the lifting height (c) the same cup of coins (d) how hard we must pull
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) a battery cell (d) an empty thread reel
24. 24.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
25. 25.True or false: a sloping road is an inclined plane. (a) True (b) False
26. 26.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a flagpole (c) a spoon lifting a lid (d) a ramp
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a balloon (d) coins as the load
28. 28.⚙️ Which of these is a lever? (a) a steering wheel (b) a doorknob (c) a flagpole (d) a spoon lifting a lid
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) coins as the load (c) a small paper cup (d) a pencil
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) string (d) coins as the load
31. 31.⚖️ 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 lifting height (c) number of pulleys
32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
33. 33.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
34. 34.⚙️ Which of these uses a pulley? (a) a sloping road (b) a crowbar (c) a see-saw (d) a well pulley
35. 35.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
36. 36.⚙️ Which simple machine is a flagpole? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
38. 38.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
39. 39.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
40. 40.True or false: a well pulley uses a pulley. (a) False (b) True

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