Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 549 · 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 of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) string (d) a balloon
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a magnet (c) an empty thread reel (d) a small paper cup
3. 3.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
4. 4.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
5. 5.True or false: a well pulley is a lever. (a) True (b) False
6. 6.🧺 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 balloon (d) a small paper cup
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) string (d) a pencil
11. 11.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
12. 12.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 10 cm (d) 5 cm
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) a pencil (d) a battery cell
14. 14.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a well pulley (c) a slide (d) a see-saw
15. 15.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
16. 16.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
17. 17.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
18. 18.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
19. 19.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
20. 20.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
21. 21.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
22. 22.True or false: a tap handle uses a pulley. (a) True (b) False
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a battery cell (d) string
25. 25.🧺 Do we need a small paper cup 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 the one thing we change. (a) True (b) False
27. 27.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
28. 28.True or false: a flagpole is an inclined plane. (a) False (b) True
29. 29.⚙️ Which of these uses a pulley? (a) a slide (b) a ramp (c) a doorknob (d) a crane
30. 30.⚖️ 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
31. 31.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) the same (d) double
33. 33.🏗️ 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
34. 34.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
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 change it (c) we keep it the same
36. 36.🧺 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 battery cell (d) a pencil
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
40. 40.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a steering wheel (c) a bottle opener (d) a flagpole

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