Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 94 · 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.⚖️ 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
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) string (d) a pencil
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) yeast (d) turmeric powder
4. 4.⚙️ Which simple machine is a crane? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
5. 5.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
6. 6.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
7. 7.True or false: a slide is a wheel and axle. (a) True (b) False
8. 8.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a tap handle (c) a ramp (d) a crowbar
9. 9.⚙️ Which of these uses a pulley? (a) a tap handle (b) a well pulley (c) a see-saw (d) a doorknob
10. 10.True or false: a tap handle is an inclined plane. (a) False (b) True
11. 11.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.⚙️ Which of these is a lever? (a) a tap handle (b) a crane (c) a slide (d) a see-saw
15. 15.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
16. 16.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) pulling down is easier (d) the bucket floats
17. 17.True or false: a see-saw is a wheel and axle. (a) False (b) True
18. 18.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
19. 19.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a well pulley (c) a sloping road (d) a flagpole
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) the same cup of coins (d) how hard we must pull
21. 21.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
22. 22.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
23. 23.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
24. 24.⚖️ 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) False (b) True
25. 25.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) the same (d) impossible
26. 26.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
27. 27.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
28. 28.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys
31. 31.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a crowbar (c) a steering wheel (d) a see-saw
32. 32.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.⚙️ Which simple machine is a slide? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
35. 35.⚖️ 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 change it (c) we keep it the same
36. 36.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
37. 37.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the blackboard (d) on the flagpole
38. 38.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a well pulley (c) a ramp (d) a tap handle
39. 39.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
40. 40.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 10 cm (d) 40 cm

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