Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 601 · 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) an inclined plane (d) a pulley
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
3. 3.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) a battery cell (d) a pencil
5. 5.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
6. 6.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
7. 7.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
8. 8.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a battery cell (d) an empty thread reel
10. 10.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) about half (d) double
11. 11.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
12. 12.True or false: a bottle opener uses a pulley. (a) True (b) False
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) a small paper cup (d) coins as the load
14. 14.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
15. 15.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a flagpole (c) a steering wheel (d) a see-saw
16. 16.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it gets hot (d) it is magnetic
17. 17.🏗️ 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
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.⚖️ 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
20. 20.True or false: a bottle opener is a lever. (a) True (b) False
21. 21.🔮 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
22. 22.⚖️ 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 cup of coins (c) number of pulleys (d) the same string
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins
24. 24.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a magnet (c) coins as the load (d) string
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) coins as the load (d) a mirror
27. 27.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
28. 28.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets longer (d) it gets wet
29. 29.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) easier (d) impossible
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) coins as the load (d) a battery cell
31. 31.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
32. 32.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
33. 33.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) changes pull direction (d) makes it magnetic
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) on the flagpole (d) in the tap
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) yeast (d) coins as the load
38. 38.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
39. 39.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the rope gets shorter (d) the bucket floats
40. 40.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a flagpole (c) a tap handle (d) a well pulley

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