Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 188 · 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) string (b) coins as the load (c) a pencil (d) a battery cell
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) string (d) coins as the load
4. 4.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a well pulley (c) a sloping road (d) a tap handle
5. 5.True or false: a well pulley uses a pulley. (a) True (b) False
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
7. 7.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
9. 9.⚙️ Which of these is a lever? (a) a flagpole (b) a sloping road (c) a see-saw (d) a crane
10. 10.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) makes it magnetic (c) changes pull direction (d) adds weight
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
13. 13.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
17. 17.True or false: a crowbar uses a pulley. (a) True (b) False
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a battery cell (d) a small paper cup
19. 19.⚖️ 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) number of pulleys (c) the same string (d) the lifting height
20. 20.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
21. 21.⚖️ 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
22. 22.⚖️ 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 lifting height (c) number of pulleys
23. 23.⚙️ Which of these uses a pulley? (a) a crowbar (b) a see-saw (c) a slide (d) a well pulley
24. 24.⚙️ Which of these uses a pulley? (a) a sloping road (b) a flagpole (c) a steering wheel (d) a see-saw
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) an empty thread reel (d) string
26. 26.⚖️ 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) False (b) True
27. 27.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) the same (d) easier
28. 28.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
29. 29.True or false: a crane uses a pulley. (a) True (b) False
30. 30.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
31. 31.⚙️ Which of these is a lever? (a) a well pulley (b) a spoon lifting a lid (c) a sloping road (d) a doorknob
32. 32.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the bench (d) on the flagpole
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) string (c) a magnet (d) a mirror
34. 34.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the lifting height (c) the same cup of coins (d) number of pulleys
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a battery cell (d) a small paper cup
37. 37.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
38. 38.⚙️ Which simple machine is a doorknob? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
39. 39.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
40. 40.⚖️ 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

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