Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 822 · 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) an empty thread reel (b) coins as the load (c) a small paper cup (d) yeast
2. 2.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
3. 3.⚖️ 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 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) a magnet (b) string (c) coins as the load (d) a small paper cup
5. 5.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
6. 6.⚖️ 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) True (b) False
7. 7.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
8. 8.⚙️ Which of these uses a pulley? (a) a crowbar (b) a slide (c) a spoon lifting a lid (d) a flagpole
9. 9.🇮🇳 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
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) a balloon (d) turmeric powder
11. 11.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) down (d) in a circle
12. 12.⚖️ 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
13. 13.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a battery cell (c) coins as the load (d) an empty thread reel
15. 15.True or false: a ramp is a wheel and axle. (a) True (b) False
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
17. 17.⚖️ 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
18. 18.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
19. 19.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) an empty thread reel (d) yeast
20. 20.⚙️ Which of these is a lever? (a) a well pulley (b) a see-saw (c) a doorknob (d) a sloping road
21. 21.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not 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 string (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) turmeric powder (c) an empty thread reel (d) coins as the load
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) turmeric powder
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
26. 26.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
27. 27.True or false: a doorknob is a wheel and axle. (a) True (b) False
28. 28.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
29. 29.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) a small paper cup (d) a magnet
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) a mirror (d) a small paper cup
32. 32.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
33. 33.⚙️ Which of these is a lever? (a) a doorknob (b) a crowbar (c) a ramp (d) a well pulley
34. 34.⚖️ 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 measure it (c) we change it
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) string (c) an empty thread reel (d) a pencil
36. 36.⚖️ 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
37. 37.⚙️ Which of these uses a pulley? (a) a crowbar (b) a well pulley (c) a doorknob (d) a spoon lifting a lid
38. 38.⚖️ 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) how hard we must pull (c) the same string (d) number of pulleys
39. 39.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
40. 40.⚖️ 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 same string (c) number of pulleys

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