Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 923 · 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 “the same string”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.True or false: a flagpole is an inclined plane. (a) True (b) False
3. 3.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
4. 4.⚖️ 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
5. 5.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) up (c) sideways (d) in a circle
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
7. 7.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
8. 8.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
9. 9.⚖️ 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
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) harder (d) easier
11. 11.🧺 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) yeast (d) a pencil
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) a mirror (d) a small paper cup
13. 13.⚖️ 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
14. 14.⚖️ 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 lifting height (c) the same cup of coins (d) number of pulleys
15. 15.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
16. 16.True or false: a doorknob uses a pulley. (a) True (b) False
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) a balloon (d) an empty thread reel
18. 18.⚖️ 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) number of pulleys (c) the lifting height
19. 19.True or false: a see-saw is a lever. (a) False (b) True
20. 20.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a sloping road (c) a tap handle (d) a see-saw
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) an empty thread reel (d) coins as the load
22. 22.⚙️ Which of these is a lever? (a) a crane (b) a steering wheel (c) a bottle opener (d) a sloping road
23. 23.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
24. 24.True or false: a bottle opener is a wheel and axle. (a) True (b) False
25. 25.⚖️ 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) True (b) False
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) turmeric powder
28. 28.⚙️ Which of these is a lever? (a) a flagpole (b) a slide (c) a doorknob (d) a crowbar
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
31. 31.⚖️ 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
32. 32.⚖️ 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
33. 33.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) False (b) True
36. 36.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
37. 37.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a steering wheel (c) a sloping road (d) a flagpole
38. 38.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
39. 39.True or false: a bottle opener uses a pulley. (a) True (b) False
40. 40.True or false: a well pulley uses a pulley. (a) False (b) True

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