Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 560 · 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 slide is an inclined plane. (a) False (b) True
2. 2.True or false: a see-saw is a lever. (a) False (b) True
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
4. 4.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 40 cm (d) 10 cm
5. 5.🛟 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
6. 6.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
7. 7.True or false: a tap handle is an inclined plane. (a) False (b) True
8. 8.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
9. 9.⚙️ Which of these is a lever? (a) a sloping road (b) a crane (c) a spoon lifting a lid (d) a flagpole
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) a battery cell (d) an empty thread reel
11. 11.⚖️ 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) the lifting height (d) the same cup of coins
12. 12.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
13. 13.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the bucket floats (c) the rope gets shorter (d) water gets lighter
14. 14.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
15. 15.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
16. 16.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the bench (c) on the blackboard (d) on the flagpole
17. 17.⚖️ 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
18. 18.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
19. 19.True or false: a sloping road is an inclined plane. (a) False (b) True
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) False (b) True
21. 21.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a battery cell (c) a balloon (d) a magnet
23. 23.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
24. 24.⚖️ 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
25. 25.🧺 Do we need coins as the load 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? True or false: the same cup of coins is what we measure. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
30. 30.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a spoon lifting a lid (c) a steering wheel (d) a flagpole
31. 31.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
32. 32.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a slide (c) a flagpole (d) a crane
33. 33.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) a pencil (d) a magnet
36. 36.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) about half (d) zero
37. 37.⚙️ Which of these is a lever? (a) a see-saw (b) a doorknob (c) a sloping road (d) a flagpole
38. 38.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) makes it magnetic (d) adds weight
39. 39.⚖️ 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
40. 40.⚖️ 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 change it (c) we keep it the same

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