Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 64 · 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 simple machine is a crane? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
2. 2.⚖️ 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 string (c) number of pulleys (d) the lifting height
3. 3.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
4. 4.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
5. 5.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
6. 6.True or false: a crowbar is an inclined plane. (a) True (b) False
7. 7.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
8. 8.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
9. 9.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
10. 10.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) yeast (d) coins as the load
12. 12.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
14. 14.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a doorknob (c) a bottle opener (d) a sloping road
15. 15.True or false: a crowbar uses a pulley. (a) True (b) False
16. 16.🛟 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
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) a magnet (d) string
18. 18.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
21. 21.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
23. 23.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) an empty thread reel (c) coins as the load (d) a small paper cup
25. 25.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap
28. 28.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
29. 29.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) the rope gets shorter (d) water gets lighter
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) coins as the load (d) an empty thread reel
32. 32.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a battery cell (c) coins as the load (d) a small paper cup
34. 34.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a steering wheel (c) a doorknob (d) a sloping road
35. 35.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
36. 36.⚙️ Which simple machine is a flagpole? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) string (d) a pencil
38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane

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